121163690 has 32 divisors (see below), whose sum is σ = 222735744. Its totient is φ = 47442240.

The previous prime is 121163683. The next prime is 121163699. The reversal of 121163690 is 96361121.

It is a super-2 number, since 2×121163690² = 29361279548832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121163699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186947 + ... + 187593.

It is an arithmetic number, because the mean of its divisors is an integer number (6960492).

Almost surely, 2^121163690 is an apocalyptic number.

121163690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121163690 is a deficient number, since it is larger than the sum of its proper divisors (101572054).

121163690 is a wasteful number, since it uses less digits than its factorization.

121163690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 121163690 is about 11007.4379398659. The cubic root of 121163690 is about 494.8316810296.

The spelling of 121163690 in words is "one hundred twenty-one million, one hundred sixty-three thousand, six hundred ninety".