1200102023100 has 72 divisors (see below), whose sum is σ = 3475116967168. Its totient is φ = 319767134400.

The previous prime is 1200102023063. The next prime is 1200102023111. The reversal of 1200102023100 is 13202010021.

It is a super-2 number, since 2×1200102023100² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255534 + ... + 1994133.

Almost surely, 2^{1200102023100} is an apocalyptic number.

1200102023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200102023100 is an abundant number, since it is smaller than the sum of its proper divisors (2275014944068).

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

1200102023100 is a wasteful number, since it uses less digits than its factorization.

1200102023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250915 (or 3250908 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1200102023100 its reverse (13202010021), we get a palindrome (1213304033121).

The spelling of 1200102023100 in words is "one trillion, two hundred billion, one hundred two million, twenty-three thousand, one hundred".