121251572 has 48 divisors (see below), whose sum is σ = 235849152. Its totient is φ = 54190080.

The previous prime is 121251541. The next prime is 121251583. The reversal of 121251572 is 275152121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 471668 + ... + 471924.

It is an arithmetic number, because the mean of its divisors is an integer number (4913524).

Almost surely, 2^121251572 is an apocalyptic number.

It is an amenable number.

121251572 is a deficient number, since it is larger than the sum of its proper divisors (114597580).

121251572 is a wasteful number, since it uses less digits than its factorization.

121251572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 526 counting only the distinct ones).

The product of its digits is 1400, while the sum is 26.

The square root of 121251572 is about 11011.4291533842. The cubic root of 121251572 is about 494.9512886121.

The spelling of 121251572 in words is "one hundred twenty-one million, two hundred fifty-one thousand, five hundred seventy-two".