121867690 has 32 divisors (see below), whose sum is σ = 251164800. Its totient is φ = 41705664.

The previous prime is 121867687. The next prime is 121867709. The reversal of 121867690 is 96768121.

It is a super-2 number, since 2×121867690² = 29703467731872200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46536 + ... + 49084.

It is an arithmetic number, because the mean of its divisors is an integer number (7848900).

Almost surely, 2^121867690 is an apocalyptic number.

121867690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121867690 is an abundant number, since it is smaller than the sum of its proper divisors (129297110).

121867690 is a wasteful number, since it uses less digits than its factorization.

121867690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 121867690 is about 11039.3700001404. The cubic root of 121867690 is about 495.7882078997.

The spelling of 121867690 in words is "one hundred twenty-one million, eight hundred sixty-seven thousand, six hundred ninety".