102111111010 has 16 divisors (see below), whose sum is σ = 187710638976. Its totient is φ = 39975413488.

The previous prime is 102111110993. The next prime is 102111111071. The reversal of 102111111010 is 10111111201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108628372 + ... + 108629311.

It is an arithmetic number, because the mean of its divisors is an integer number (11731914936).

Almost surely, 2^102111111010 is an apocalyptic number.

102111111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111111010 is a deficient number, since it is larger than the sum of its proper divisors (85599527966).

102111111010 is a wasteful number, since it uses less digits than its factorization.

102111111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217257737.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 102111111010 its reverse (10111111201), we get a palindrome (112222222211).

The spelling of 102111111010 in words is "one hundred two billion, one hundred eleven million, one hundred eleven thousand, ten".