121237772 has 12 divisors (see below), whose sum is σ = 212798040. Its totient is φ = 60438336.

The previous prime is 121237763. The next prime is 121237799. The reversal of 121237772 is 277732121.

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, 43622 + ... + 46317.

It is an arithmetic number, because the mean of its divisors is an integer number (17733170).

Almost surely, 2^121237772 is an apocalyptic number.

It is an amenable number.

121237772 is a deficient number, since it is larger than the sum of its proper divisors (91560268).

121237772 is a wasteful number, since it uses less digits than its factorization.

121237772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90280 (or 90278 counting only the distinct ones).

The product of its digits is 8232, while the sum is 32.

The square root of 121237772 is about 11010.8025138952. The cubic root of 121237772 is about 494.9325106097.

Adding to 121237772 its reverse (277732121), we get a palindrome (398969893).

The spelling of 121237772 in words is "one hundred twenty-one million, two hundred thirty-seven thousand, seven hundred seventy-two".