121022440 has 64 divisors (see below), whose sum is σ = 339500160. Its totient is φ = 37720320.

The previous prime is 121022417. The next prime is 121022453. The reversal of 121022440 is 44220121.

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, 16567 + ... + 22726.

It is an arithmetic number, because the mean of its divisors is an integer number (5304690).

Almost surely, 2^121022440 is an apocalyptic number.

121022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022440 is an abundant number, since it is smaller than the sum of its proper divisors (218477720).

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

121022440 is a wasteful number, since it uses less digits than its factorization.

121022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39322 (or 39318 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 121022440 is about 11001.0199527135. The cubic root of 121022440 is about 494.6393182482.

Adding to 121022440 its reverse (44220121), we get a palindrome (165242561).

The spelling of 121022440 in words is "one hundred twenty-one million, twenty-two thousand, four hundred forty".