121102111011 has 16 divisors (see below), whose sum is σ = 184541498624. Its totient is φ = 69199350624.

The previous prime is 121102110989. The next prime is 121102111033. The reversal of 121102111011 is 110111201121.

It is an interprime number because it is at equal distance from previous prime (121102110989) and next prime (121102111033).

It is not a de Polignac number, because 121102111011 - 2⁹ = 121102110499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121101111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272300 + ... + 1364166.

It is an arithmetic number, because the mean of its divisors is an integer number (11533843664).

Almost surely, 2^121102111011 is an apocalyptic number.

121102111011 is a deficient number, since it is larger than the sum of its proper divisors (63439387613).

121102111011 is an equidigital number, since it uses as much as digits as its factorization.

121102111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154650.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121102111011 its reverse (110111201121), we get a palindrome (231213312132).

The spelling of 121102111011 in words is "one hundred twenty-one billion, one hundred two million, one hundred eleven thousand, eleven".