121121111202110 has 32 divisors (see below), whose sum is σ = 219282755483232. Its totient is φ = 48167399329920.

The previous prime is 121121111202107. The next prime is 121121111202173. The reversal of 121121111202110 is 11202111121121.

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, 85934165 + ... + 87332255.

It is an arithmetic number, because the mean of its divisors is an integer number (6852586108851).

Almost surely, 2^{121121111202110} is an apocalyptic number.

121121111202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121111202110 is a deficient number, since it is larger than the sum of its proper divisors (98161644281122).

121121111202110 is a wasteful number, since it uses less digits than its factorization.

121121111202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448348.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121121111202110 its reverse (11202111121121), we get a palindrome (132323222323231).

The spelling of 121121111202110 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred two thousand, one hundred ten".