121236190 has 16 divisors (see below), whose sum is σ = 218816928. Its totient is φ = 48362976.

The previous prime is 121236187. The next prime is 121236223. The reversal of 121236190 is 91632121.

It is a super-2 number, since 2×121236190² = 29396427531432200, which contains 22 as substring.

It is a congruent number.

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, 12522 + ... + 19981.

It is an arithmetic number, because the mean of its divisors is an integer number (13676058).

Almost surely, 2^121236190 is an apocalyptic number.

121236190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121236190 is a deficient number, since it is larger than the sum of its proper divisors (97580738).

121236190 is a wasteful number, since it uses less digits than its factorization.

121236190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32883.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 121236190 is about 11010.7306751187. The cubic root of 121236190 is about 494.9303578520.

The spelling of 121236190 in words is "one hundred twenty-one million, two hundred thirty-six thousand, one hundred ninety".