121975576 has 16 divisors (see below), whose sum is σ = 236082240. Its totient is φ = 59020320.

The previous prime is 121975559. The next prime is 121975591. The reversal of 121975576 is 675579121.

It is a super-2 number, since 2×121975576² = 29756082281063552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245671 + ... + 246166.

It is an arithmetic number, because the mean of its divisors is an integer number (14755140).

Almost surely, 2^121975576 is an apocalyptic number.

It is an amenable number.

121975576 is a deficient number, since it is larger than the sum of its proper divisors (114106664).

121975576 is a wasteful number, since it uses less digits than its factorization.

121975576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491874 (or 491870 counting only the distinct ones).

The product of its digits is 132300, while the sum is 43.

The square root of 121975576 is about 11044.2553393155. The cubic root of 121975576 is about 495.9344671485.

The spelling of 121975576 in words is "one hundred twenty-one million, nine hundred seventy-five thousand, five hundred seventy-six".