102111221110 has 32 divisors (see below), whose sum is σ = 190160071200. Its totient is φ = 39431508480.

The previous prime is 102111221077. The next prime is 102111221221. The reversal of 102111221110 is 11122111201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3622270 + ... + 3650350.

It is an arithmetic number, because the mean of its divisors is an integer number (5942502225).

Almost surely, 2^102111221110 is an apocalyptic number.

102111221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111221110 is a deficient number, since it is larger than the sum of its proper divisors (88048850090).

102111221110 is a wasteful number, since it uses less digits than its factorization.

102111221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40656.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111221110 its reverse (11122111201), we get a palindrome (113233332311).

It can be divided in two parts, 10211 and 1221110, that added together give a palindrome (1231321).

The spelling of 102111221110 in words is "one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred ten".