121116402623 has 4 divisors (see below), whose sum is σ = 121150843560. Its totient is φ = 121081961688.

The previous prime is 121116402587. The next prime is 121116402643. The reversal of 121116402623 is 326204611121.

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 121116402623 - 2¹⁰ = 121116401599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121116402643) 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, 17215193 + ... + 17222226.

It is an arithmetic number, because the mean of its divisors is an integer number (30287710890).

Almost surely, 2^121116402623 is an apocalyptic number.

121116402623 is a deficient number, since it is larger than the sum of its proper divisors (34440937).

121116402623 is an equidigital number, since it uses as much as digits as its factorization.

121116402623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440936.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 121116402623 in words is "one hundred twenty-one billion, one hundred sixteen million, four hundred two thousand, six hundred twenty-three".