102200120021020 has 48 divisors (see below), whose sum is σ = 249908218031808. Its totient is φ = 34378908295680.

The previous prime is 102200120021009. The next prime is 102200120021033. The reversal of 102200120021020 is 20120021002201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6886793121 + ... + 6886807960.

It is an arithmetic number, because the mean of its divisors is an integer number (5206421208996).

Almost surely, 2^{102200120021020} is an apocalyptic number.

102200120021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102200120021020 is an abundant number, since it is smaller than the sum of its proper divisors (147708098010788).

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

102200120021020 is a wasteful number, since it uses less digits than its factorization.

102200120021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13773601150 (or 13773601148 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102200120021020 its reverse (20120021002201), we get a palindrome (122320141023221).

The spelling of 102200120021020 in words is "one hundred two trillion, two hundred billion, one hundred twenty million, twenty-one thousand, twenty".