102111220100 has 36 divisors (see below), whose sum is σ = 221600400000. Its totient is φ = 40840976160.

The previous prime is 102111220067. The next prime is 102111220111. The reversal of 102111220100 is 1022111201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1342901 + ... + 1416899.

Almost surely, 2^102111220100 is an apocalyptic number.

102111220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111220100 is an abundant number, since it is smaller than the sum of its proper divisors (119489179900).

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

102111220100 is a wasteful number, since it uses less digits than its factorization.

102111220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87812 (or 87805 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102111220100 its reverse (1022111201), we get a palindrome (103133331301).

The spelling of 102111220100 in words is "one hundred two billion, one hundred eleven million, two hundred twenty thousand, one hundred".