121737228 has 12 divisors (see below), whose sum is σ = 284053560. Its totient is φ = 40579072.

The previous prime is 121737227. The next prime is 121737263. The reversal of 121737228 is 822737121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×121737228² = 29639905362247968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121737223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5072373 + ... + 5072396.

It is an arithmetic number, because the mean of its divisors is an integer number (23671130).

Almost surely, 2^121737228 is an apocalyptic number.

It is an amenable number.

121737228 is an abundant number, since it is smaller than the sum of its proper divisors (162316332).

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

121737228 is a wasteful number, since it uses less digits than its factorization.

121737228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10144776 (or 10144774 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 121737228 is about 11033.4594756133. The cubic root of 121737228 is about 495.6112273948.

The spelling of 121737228 in words is "one hundred twenty-one million, seven hundred thirty-seven thousand, two hundred twenty-eight".