101210221121128 has 32 divisors (see below), whose sum is σ = 221493493036800. Its totient is φ = 42452919496512.

The previous prime is 101210221121039. The next prime is 101210221121129. The reversal of 101210221121128 is 821121122012101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (101210221121129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19226863083 + ... + 19226868346.

It is an arithmetic number, because the mean of its divisors is an integer number (6921671657400).

Almost surely, 2^{101210221121128} is an apocalyptic number.

It is an amenable number.

101210221121128 is an abundant number, since it is smaller than the sum of its proper divisors (120283271915672).

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

101210221121128 is a wasteful number, since it uses less digits than its factorization.

101210221121128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38453731489 (or 38453731485 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 25.

Adding to 101210221121128 its reverse (821121122012101), we get a palindrome (922331343133229).

The spelling of 101210221121128 in words is "one hundred one trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-eight".