10221220122 has 32 divisors (see below), whose sum is σ = 20743715520. Its totient is φ = 3356956800.

The previous prime is 10221220117. The next prime is 10221220123. The reversal of 10221220122 is 22102212201.

It is not an unprimeable number, because it can be changed into a prime (10221220123) 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, 434872 + ... + 457772.

It is an arithmetic number, because the mean of its divisors is an integer number (648241110).

Almost surely, 2^10221220122 is an apocalyptic number.

10221220122 is an abundant number, since it is smaller than the sum of its proper divisors (10522495398).

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

10221220122 is a wasteful number, since it uses less digits than its factorization.

10221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10221220122 its reverse (22102212201), we get a palindrome (32323432323).

It can be divided in two parts, 102212201 and 22, that multiplied together give a palindrome (2248668422).

The spelling of 10221220122 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".