20120102102 has 4 divisors (see below), whose sum is σ = 30180153156. Its totient is φ = 10060051050.

The previous prime is 20120102039. The next prime is 20120102111.

It is a happy number.

20120102102 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030025524 + ... + 5030025527.

It is an arithmetic number, because the mean of its divisors is an integer number (7545038289).

Almost surely, 2^20120102102 is an apocalyptic number.

20120102102 is a deficient number, since it is larger than the sum of its proper divisors (10060051054).

20120102102 is a wasteful number, since it uses less digits than its factorization.

20120102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060051053.

The product of its (nonzero) digits is 16, while the sum is 11.

Multiplying 20120102102 by its sum of digits (11), we get a palindrome (221321123122).

The spelling of 20120102102 in words is "twenty billion, one hundred twenty million, one hundred two thousand, one hundred two".