21122160300 has 108 divisors (see below), whose sum is σ = 66862033056. Its totient is φ = 5576784000.

The previous prime is 21122160287. The next prime is 21122160317. The reversal of 21122160300 is 306122112.

It is a super-2 number, since 2×21122160300² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25284 + ... + 207083.

Almost surely, 2^21122160300 is an apocalyptic number.

21122160300 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 21122160300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33431016528).

21122160300 is an abundant number, since it is smaller than the sum of its proper divisors (45739872756).

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

21122160300 is a wasteful number, since it uses less digits than its factorization.

21122160300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232488 (or 232478 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21122160300 its reverse (306122112), we get a palindrome (21428282412).

The spelling of 21122160300 in words is "twenty-one billion, one hundred twenty-two million, one hundred sixty thousand, three hundred".