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21120010210200 = 233521127071182121
BaseRepresentation
bin1001100110101011000101…
…01101001100101110011000
32202210001102211021021101210
410303111202231030232120
510232012240103211300
6112530222043543120
74306604353516446
oct463254255145630
982701384237353
1021120010210200
116802a45191130
12245124882aaa0
13ba27ba900075
145302dd107b96
152695a741d050
hex133562b4cb98

21120010210200 has 192 divisors, whose sum is σ = 71450479912320. Its totient is φ = 5118106752000.

The previous prime is 21120010210153. The next prime is 21120010210237. The reversal of 21120010210200 is 201201002112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17275140 + ... + 18457260.

It is an arithmetic number, because the mean of its divisors is an integer number (372137916210).

Almost surely, 221120010210200 is an apocalyptic number.

21120010210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21120010210200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35725239956160).

21120010210200 is an abundant number, since it is smaller than the sum of its proper divisors (50330469702120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120010210200 is a wasteful number, since it uses less digits than its factorization.

21120010210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184858 (or 1184849 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120010210200 its reverse (201201002112), we get a palindrome (21321211212312).

The spelling of 21120010210200 in words is "twenty-one trillion, one hundred twenty billion, ten million, two hundred ten thousand, two hundred".