121400021324 has 36 divisors (see below), whose sum is σ = 216639789912. Its totient is φ = 59525303040.

The previous prime is 121400021269. The next prime is 121400021329. The reversal of 121400021324 is 423120004121.

It is a junction number, because it is equal to n+sod(n) for n = 121400021296 and 121400021305.

It is not an unprimeable number, because it can be changed into a prime (121400021329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5003807 + ... + 5028009.

It is an arithmetic number, because the mean of its divisors is an integer number (6017771942).

Almost surely, 2^121400021324 is an apocalyptic number.

It is an amenable number.

121400021324 is a deficient number, since it is larger than the sum of its proper divisors (95239768588).

121400021324 is a wasteful number, since it uses less digits than its factorization.

121400021324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24666 (or 24603 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121400021324 its reverse (423120004121), we get a palindrome (544520025445).

The spelling of 121400021324 in words is "one hundred twenty-one billion, four hundred million, twenty-one thousand, three hundred twenty-four".