101023131031221 has 32 divisors (see below), whose sum is σ = 156054148680960. Its totient is φ = 56934755587584.

The previous prime is 101023131031217. The next prime is 101023131031271. The reversal of 101023131031221 is 122130131320101.

It is not a de Polignac number, because 101023131031221 - 2² = 101023131031217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101023131031271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43995031 + ... + 46234283.

It is an arithmetic number, because the mean of its divisors is an integer number (4876692146280).

Almost surely, 2^{101023131031221} is an apocalyptic number.

It is an amenable number.

101023131031221 is a deficient number, since it is larger than the sum of its proper divisors (55031017649739).

101023131031221 is a wasteful number, since it uses less digits than its factorization.

101023131031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268765.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 101023131031221 its reverse (122130131320101), we get a palindrome (223153262351322).

The spelling of 101023131031221 in words is "one hundred one trillion, twenty-three billion, one hundred thirty-one million, thirty-one thousand, two hundred twenty-one".