121109072 has 20 divisors (see below), whose sum is σ = 268170336. Its totient is φ = 51903840.

The previous prime is 121109057. The next prime is 121109077. The reversal of 121109072 is 270901121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121109077) 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, 540554 + ... + 540777.

Almost surely, 2^121109072 is an apocalyptic number.

It is an amenable number.

121109072 is an abundant number, since it is smaller than the sum of its proper divisors (147061264).

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

121109072 is a wasteful number, since it uses less digits than its factorization.

121109072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081346 (or 1081340 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 121109072 is about 11004.9567014141. The cubic root of 121109072 is about 494.7573166751.

The spelling of 121109072 in words is "one hundred twenty-one million, one hundred nine thousand, seventy-two".