20020102129 has 16 divisors (see below), whose sum is σ = 20980062720. Its totient is φ = 19067780160.

The previous prime is 20020102127. The next prime is 20020102169. The reversal of 20020102129 is 92120102002.

It is not a de Polignac number, because 20020102129 - 2¹ = 20020102127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020102127) 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, 6996159 + ... + 6999019.

It is an arithmetic number, because the mean of its divisors is an integer number (1311253920).

Almost surely, 2^20020102129 is an apocalyptic number.

It is an amenable number.

20020102129 is a deficient number, since it is larger than the sum of its proper divisors (959960591).

20020102129 is a wasteful number, since it uses less digits than its factorization.

20020102129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20020102129 in words is "twenty billion, twenty million, one hundred two thousand, one hundred twenty-nine".