121021204 has 12 divisors (see below), whose sum is σ = 214770528. Its totient is φ = 59658200.

The previous prime is 121021183. The next prime is 121021211. The reversal of 121021204 is 402120121.

It is a happy number.

It is a super-2 number, since 2×121021204² = 29292263635219232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212782 + ... + 213349.

It is an arithmetic number, because the mean of its divisors is an integer number (17897544).

Almost surely, 2^121021204 is an apocalyptic number.

It is an amenable number.

121021204 is a deficient number, since it is larger than the sum of its proper divisors (93749324).

121021204 is a wasteful number, since it uses less digits than its factorization.

121021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426206 (or 426204 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121021204 is about 11000.9637759607. The cubic root of 121021204 is about 494.6376343283.

Adding to 121021204 its reverse (402120121), we get a palindrome (523141325).

The spelling of 121021204 in words is "one hundred twenty-one million, twenty-one thousand, two hundred four".