221231012013102 has 32 divisors (see below), whose sum is σ = 544568644956672. Its totient is φ = 58346640530784.

The previous prime is 221231012013091. The next prime is 221231012013107. The reversal of 221231012013102 is 201310210132122.

221231012013102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (221231012013107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202592501298 + ... + 202592502389.

It is an arithmetic number, because the mean of its divisors is an integer number (17017770154896).

Almost surely, 2^{221231012013102} is an apocalyptic number.

221231012013102 is an abundant number, since it is smaller than the sum of its proper divisors (323337632943570).

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

221231012013102 is a wasteful number, since it uses less digits than its factorization.

221231012013102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405185003712.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221231012013102 its reverse (201310210132122), we get a palindrome (422541222145224).

The spelling of 221231012013102 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, twelve million, thirteen thousand, one hundred two".