121340465554 has 32 divisors (see below), whose sum is σ = 233055478656. Its totient is φ = 45997787520.

The previous prime is 121340465537. The next prime is 121340465579. The reversal of 121340465554 is 455564043121.

It is a super-2 number, since 2×121340465554² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10641939 + ... + 10653334.

It is an arithmetic number, because the mean of its divisors is an integer number (7282983708).

Almost surely, 2^121340465554 is an apocalyptic number.

121340465554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121340465554 is a deficient number, since it is larger than the sum of its proper divisors (111715013102).

121340465554 is a wasteful number, since it uses less digits than its factorization.

121340465554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21295330.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 121340465554 in words is "one hundred twenty-one billion, three hundred forty million, four hundred sixty-five thousand, five hundred fifty-four".