121401440224 has 48 divisors (see below), whose sum is σ = 249443131392. Its totient is φ = 58051700608.

The previous prime is 121401440219. The next prime is 121401440233. The reversal of 121401440224 is 422044104121.

It is a happy number.

It is a super-2 number, since 2×121401440224² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6189537 + ... + 6209119.

It is an arithmetic number, because the mean of its divisors is an integer number (5196731904).

Almost surely, 2^121401440224 is an apocalyptic number.

It is an amenable number.

121401440224 is an abundant number, since it is smaller than the sum of its proper divisors (128041691168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121401440224 is a wasteful number, since it uses less digits than its factorization.

121401440224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28039 (or 28031 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 121401440224 its reverse (422044104121), we get a palindrome (543445544345).

The spelling of 121401440224 in words is "one hundred twenty-one billion, four hundred one million, four hundred forty thousand, two hundred twenty-four".