121132111110 has 32 divisors (see below), whose sum is σ = 290756252160. Its totient is φ = 32297542368.

The previous prime is 121132111109. The next prime is 121132111127. The reversal of 121132111110 is 11111231121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121132111110.

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, 42670 + ... + 494049.

It is an arithmetic number, because the mean of its divisors is an integer number (9086132880).

Almost surely, 2^121132111110 is an apocalyptic number.

121132111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121132111110 is an abundant number, since it is smaller than the sum of its proper divisors (169624141050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121132111110 is a wasteful number, since it uses less digits than its factorization.

121132111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544252.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 121132111110 its reverse (11111231121), we get a palindrome (132243342231).

It can be divided in two parts, 121 and 132111110, that added together give a palindrome (132111231).

The spelling of 121132111110 in words is "one hundred twenty-one billion, one hundred thirty-two million, one hundred eleven thousand, one hundred ten".