101001021221100 has 1152 divisors, whose sum is σ = 406962996701184. Its totient is φ = 18662400000000.

The previous prime is 101001021221041. The next prime is 101001021221131. The reversal of 101001021221100 is 1122120100101.

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

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1122176100 + ... + 1122266100.

It is an arithmetic number, because the mean of its divisors is an integer number (353266490192).

Almost surely, 2^{101001021221100} is an apocalyptic number.

101001021221100 is a gapful number since it is divisible by the number (10) 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 101001021221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203481498350592).

101001021221100 is an abundant number, since it is smaller than the sum of its proper divisors (305961975480084).

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

101001021221100 is a wasteful number, since it uses less digits than its factorization.

101001021221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90187 (or 90180 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101001021221100 its reverse (1122120100101), we get a palindrome (102123141321201).

The spelling of 101001021221100 in words is "one hundred one trillion, one billion, twenty-one million, two hundred twenty-one thousand, one hundred".