20102121102 has 32 divisors (see below), whose sum is σ = 46402642944. Its totient is φ = 5686596000.

The previous prime is 20102121097. The next prime is 20102121113. The reversal of 20102121102 is 20112120102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365174 + ... + 2373657.

It is an arithmetic number, because the mean of its divisors is an integer number (1450082592).

Almost surely, 2^20102121102 is an apocalyptic number.

20102121102 is an abundant number, since it is smaller than the sum of its proper divisors (26300521842).

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

20102121102 is a wasteful number, since it uses less digits than its factorization.

20102121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738944.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102121102 its reverse (20112120102), we get a palindrome (40214241204).

The spelling of 20102121102 in words is "twenty billion, one hundred two million, one hundred twenty-one thousand, one hundred two".