121577072 has 30 divisors (see below), whose sum is σ = 238643952. Its totient is φ = 60001696.

The previous prime is 121577059. The next prime is 121577089. The reversal of 121577072 is 270775121.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109673 + ... + 110775.

Almost surely, 2^121577072 is an apocalyptic number.

It is an amenable number.

121577072 is a deficient number, since it is larger than the sum of its proper divisors (117066880).

121577072 is an equidigital number, since it uses as much as digits as its factorization.

121577072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 121577072 is about 11026.1993451960. The cubic root of 121577072 is about 495.3937920033.

It can be divided in two parts, 1215 and 77072, that added together give a palindrome (78287).

The spelling of 121577072 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, seventy-two".