121104256377 has 24 divisors (see below), whose sum is σ = 176106756000. Its totient is φ = 73989497088.

The previous prime is 121104256363. The next prime is 121104256387. The reversal of 121104256377 is 773652401121.

It is not a de Polignac number, because 121104256377 - 2⁸ = 121104256121 is a prime.

It is a super-2 number, since 2×121104256377² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (121104256387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788752 + ... + 929697.

It is an arithmetic number, because the mean of its divisors is an integer number (7337781500).

Almost surely, 2^121104256377 is an apocalyptic number.

It is an amenable number.

121104256377 is a deficient number, since it is larger than the sum of its proper divisors (55002499623).

121104256377 is a wasteful number, since it uses less digits than its factorization.

121104256377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718617 (or 1718604 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 121104256377 its reverse (773652401121), we get a palindrome (894756657498).

The spelling of 121104256377 in words is "one hundred twenty-one billion, one hundred four million, two hundred fifty-six thousand, three hundred seventy-seven".