121013655 has 32 divisors (see below), whose sum is σ = 223492608. Its totient is φ = 54768000.

The previous prime is 121013609. The next prime is 121013663. The reversal of 121013655 is 556310121.

It is not a de Polignac number, because 121013655 - 2¹⁷ = 120882583 is a prime.

It is a congruent number.

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, 4900 + ... + 16310.

It is an arithmetic number, because the mean of its divisors is an integer number (6984144).

Almost surely, 2^121013655 is an apocalyptic number.

121013655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121013655 is a deficient number, since it is larger than the sum of its proper divisors (102478953).

121013655 is a wasteful number, since it uses less digits than its factorization.

121013655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11527.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 121013655 is about 11000.6206643080. The cubic root of 121013655 is about 494.6273493617.

Adding to 121013655 its reverse (556310121), we get a palindrome (677323776).

The spelling of 121013655 in words is "one hundred twenty-one million, thirteen thousand, six hundred fifty-five".