121331204 has 24 divisors (see below), whose sum is σ = 216917568. Its totient is φ = 59361120.

The previous prime is 121331191. The next prime is 121331213. The reversal of 121331204 is 402133121.

It is a super-2 number, since 2×121331204² = 29442522128179232, which contains 22 as substring.

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, 133319 + ... + 134225.

It is an arithmetic number, because the mean of its divisors is an integer number (9038232).

Almost surely, 2^121331204 is an apocalyptic number.

It is an amenable number.

121331204 is a deficient number, since it is larger than the sum of its proper divisors (95586364).

121331204 is a wasteful number, since it uses less digits than its factorization.

121331204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121331204 is about 11015.0444393112. The cubic root of 121331204 is about 495.0596180276.

Adding to 121331204 its reverse (402133121), we get a palindrome (523464325).

The spelling of 121331204 in words is "one hundred twenty-one million, three hundred thirty-one thousand, two hundred four".