121100122111210 has 64 divisors (see below), whose sum is σ = 238225613915520. Its totient is φ = 43956968903680.

The previous prime is 121100122111193. The next prime is 121100122111261. The reversal of 121100122111210 is 12111221001121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2213342814 + ... + 2213397526.

It is an arithmetic number, because the mean of its divisors is an integer number (3722275217430).

Almost surely, 2^{121100122111210} is an apocalyptic number.

121100122111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100122111210 is a deficient number, since it is larger than the sum of its proper divisors (117125491804310).

121100122111210 is a wasteful number, since it uses less digits than its factorization.

121100122111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90663.

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

Adding to 121100122111210 its reverse (12111221001121), we get a palindrome (133211343112331).

The spelling of 121100122111210 in words is "one hundred twenty-one trillion, one hundred billion, one hundred twenty-two million, one hundred eleven thousand, two hundred ten".