121602155983 has 48 divisors (see below), whose sum is σ = 165873007872. Its totient is φ = 86303404800.

The previous prime is 121602155947. The next prime is 121602155989. The reversal of 121602155983 is 389551206121.

It is not a de Polignac number, because 121602155983 - 2¹⁷ = 121602024911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121602155989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209616 + ... + 1306282.

It is an arithmetic number, because the mean of its divisors is an integer number (3455687664).

Almost surely, 2^121602155983 is an apocalyptic number.

121602155983 is a deficient number, since it is larger than the sum of its proper divisors (44270851889).

121602155983 is a wasteful number, since it uses less digits than its factorization.

121602155983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96764 (or 96733 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 121602155983 in words is "one hundred twenty-one billion, six hundred two million, one hundred fifty-five thousand, nine hundred eighty-three".