121054401313111 has 4 divisors (see below), whose sum is σ = 138347887214992. Its totient is φ = 103760915411232.

The previous prime is 121054401313061. The next prime is 121054401313187. The reversal of 121054401313111 is 111313104450121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121054401313111 - 2²⁷ = 121054267095383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121054401313111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121054401113111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8646742950930 + ... + 8646742950943.

It is an arithmetic number, because the mean of its divisors is an integer number (34586971803748).

Almost surely, 2^{121054401313111} is an apocalyptic number.

121054401313111 is a deficient number, since it is larger than the sum of its proper divisors (17293485901881).

121054401313111 is an equidigital number, since it uses as much as digits as its factorization.

121054401313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17293485901880.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 121054401313111 its reverse (111313104450121), we get a palindrome (232367505763232).

The spelling of 121054401313111 in words is "one hundred twenty-one trillion, fifty-four billion, four hundred one million, three hundred thirteen thousand, one hundred eleven".