121676220 has 36 divisors (see below), whose sum is σ = 369085080. Its totient is φ = 32446944.

The previous prime is 121676207. The next prime is 121676249. The reversal of 121676220 is 22676121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337810 + ... + 338169.

Almost surely, 2^121676220 is an apocalyptic number.

121676220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121676220 is an abundant number, since it is smaller than the sum of its proper divisors (247408860).

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

121676220 is a wasteful number, since it uses less digits than its factorization.

121676220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675994 (or 675989 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 121676220 is about 11030.6944477671. The cubic root of 121676220 is about 495.5284225356.

Subtracting from 121676220 its reverse (22676121), we obtain a palindrome (99000099).

The spelling of 121676220 in words is "one hundred twenty-one million, six hundred seventy-six thousand, two hundred twenty".