102121221110 has 16 divisors (see below), whose sum is σ = 186561754416. Its totient is φ = 40238809248.

The previous prime is 102121221077. The next prime is 102121221121. The reversal of 102121221110 is 11122121201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76209197 + ... + 76210536.

It is an arithmetic number, because the mean of its divisors is an integer number (11660109651).

Almost surely, 2^102121221110 is an apocalyptic number.

102121221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121221110 is a deficient number, since it is larger than the sum of its proper divisors (84440533306).

102121221110 is a wasteful number, since it uses less digits than its factorization.

102121221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152419807.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102121221110 its reverse (11122121201), we get a palindrome (113243342311).

Subtracting from 102121221110 its reverse (11122121201), we obtain a palindrome (90999099909).

The spelling of 102121221110 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".