20001021032102 has 32 divisors (see below), whose sum is σ = 33936217104384. Its totient is φ = 8758649649600.

The previous prime is 20001021032081. The next prime is 20001021032117. The reversal of 20001021032102 is 20123012010002.

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 15 ways as a sum of consecutive naturals, for example, 65603543 + ... + 65907714.

It is an arithmetic number, because the mean of its divisors is an integer number (1060506784512).

Almost surely, 2^{20001021032102} is an apocalyptic number.

20001021032102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20001021032102 is a deficient number, since it is larger than the sum of its proper divisors (13935196072282).

20001021032102 is a wasteful number, since it uses less digits than its factorization.

20001021032102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131511524.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001021032102 its reverse (20123012010002), we get a palindrome (40124033042104).

The spelling of 20001021032102 in words is "twenty trillion, one billion, twenty-one million, thirty-two thousand, one hundred two".