20121022102 has 16 divisors (see below), whose sum is σ = 30418437600. Its totient is φ = 9981705600.

The previous prime is 20121022079. The next prime is 20121022111. The reversal of 20121022102 is 20122012102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210174 + ... + 290542.

It is an arithmetic number, because the mean of its divisors is an integer number (1901152350).

Almost surely, 2^20121022102 is an apocalyptic number.

20121022102 is a deficient number, since it is larger than the sum of its proper divisors (10297415498).

20121022102 is a wasteful number, since it uses less digits than its factorization.

20121022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81351.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121022102 its reverse (20122012102), we get a palindrome (40243034204).

The spelling of 20121022102 in words is "twenty billion, one hundred twenty-one million, twenty-two thousand, one hundred two".