102021011220100 has 36 divisors (see below), whose sum is σ = 253012107827584. Its totient is φ = 34978632418080.

The previous prime is 102021011220017. The next prime is 102021011220113. The reversal of 102021011220100 is 1022110120201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72872150172 + ... + 72872151571.

Almost surely, 2^{102021011220100} is an apocalyptic number.

102021011220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021011220100 is an abundant number, since it is smaller than the sum of its proper divisors (150991096607484).

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

102021011220100 is a wasteful number, since it uses less digits than its factorization.

102021011220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145744301764 (or 145744301757 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102021011220100 its reverse (1022110120201), we get a palindrome (103043121340301).

The spelling of 102021011220100 in words is "one hundred two trillion, twenty-one billion, eleven million, two hundred twenty thousand, one hundred".