121110072 has 16 divisors (see below), whose sum is σ = 302775240. Its totient is φ = 40370016.

The previous prime is 121110037. The next prime is 121110079. The reversal of 121110072 is 270011121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110079) 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, 2523103 + ... + 2523150.

Almost surely, 2^121110072 is an apocalyptic number.

121110072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121110072 is an abundant number, since it is smaller than the sum of its proper divisors (181665168).

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

121110072 is a wasteful number, since it uses less digits than its factorization.

121110072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046262 (or 5046258 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 121110072 is about 11005.0021353928. The cubic root of 121110072 is about 494.7586784116.

Adding to 121110072 its reverse (270011121), we get a palindrome (391121193).

The spelling of 121110072 in words is "one hundred twenty-one million, one hundred ten thousand, seventy-two".