102001222011220 has 96 divisors (see below), whose sum is σ = 247935122265600. Its totient is φ = 34526376230400.

The previous prime is 102001222011197. The next prime is 102001222011251. The reversal of 102001222011220 is 22110222100201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102001222011194 and 102001222011203.

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, 5399904 + ... + 15269623.

It is an arithmetic number, because the mean of its divisors is an integer number (2582657523600).

Almost surely, 2^{102001222011220} is an apocalyptic number.

102001222011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001222011220 is an abundant number, since it is smaller than the sum of its proper divisors (145933900254380).

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

102001222011220 is a wasteful number, since it uses less digits than its factorization.

102001222011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20669993 (or 20669991 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102001222011220 its reverse (22110222100201), we get a palindrome (124111444111421).

The spelling of 102001222011220 in words is "one hundred two trillion, one billion, two hundred twenty-two million, eleven thousand, two hundred twenty".