102001012100220 has 96 divisors (see below), whose sum is σ = 292578448631616. Its totient is φ = 26535969587200.

The previous prime is 102001012100191. The next prime is 102001012100257. The reversal of 102001012100220 is 22001210100201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102001012100196 and 102001012100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75295912 + ... + 76638608.

It is an arithmetic number, because the mean of its divisors is an integer number (3047692173246).

Almost surely, 2^{102001012100220} is an apocalyptic number.

102001012100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001012100220 is an abundant number, since it is smaller than the sum of its proper divisors (190577436531396).

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

102001012100220 is a wasteful number, since it uses less digits than its factorization.

102001012100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373631 (or 1373629 counting only the distinct ones).

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

Adding to 102001012100220 its reverse (22001210100201), we get a palindrome (124002222200421).

It can be divided in two parts, 10200101 and 2100220, that added together give a palindrome (12300321).

The spelling of 102001012100220 in words is "one hundred two trillion, one billion, twelve million, one hundred thousand, two hundred twenty".