121231264 has 48 divisors (see below), whose sum is σ = 297573696. Its totient is φ = 47232000.

The previous prime is 121231247. The next prime is 121231291. The reversal of 121231264 is 462132121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22137 + ... + 27064.

It is an arithmetic number, because the mean of its divisors is an integer number (6199452).

Almost surely, 2^121231264 is an apocalyptic number.

121231264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121231264 is an abundant number, since it is smaller than the sum of its proper divisors (176342432).

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

121231264 is a wasteful number, since it uses less digits than its factorization.

121231264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49229 (or 49221 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 121231264 is about 11010.5069819695. The cubic root of 121231264 is about 494.9236545181.

Adding to 121231264 its reverse (462132121), we get a palindrome (583363385).

The spelling of 121231264 in words is "one hundred twenty-one million, two hundred thirty-one thousand, two hundred sixty-four".