121552455350 has 24 divisors (see below), whose sum is σ = 237986914440. Its totient is φ = 46061982720.

The previous prime is 121552455347. The next prime is 121552455397. The reversal of 121552455350 is 53554255121.

It is a super-2 number, since 2×121552455350² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63974027 + ... + 63975926.

It is an arithmetic number, because the mean of its divisors is an integer number (9916121435).

Almost surely, 2^121552455350 is an apocalyptic number.

121552455350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121552455350 is a deficient number, since it is larger than the sum of its proper divisors (116434459090).

121552455350 is a wasteful number, since it uses less digits than its factorization.

121552455350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127949984 (or 127949979 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 121552455350 in words is "one hundred twenty-one billion, five hundred fifty-two million, four hundred fifty-five thousand, three hundred fifty".