121616190 has 24 divisors (see below), whose sum is σ = 316202328. Its totient is φ = 32430960.

The previous prime is 121616167. The next prime is 121616191. The reversal of 121616190 is 91616121.

It is a super-2 number, since 2×121616190² = 29580995340232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121616191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675556 + ... + 675735.

It is an arithmetic number, because the mean of its divisors is an integer number (13175097).

Almost surely, 2^121616190 is an apocalyptic number.

121616190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121616190 is an abundant number, since it is smaller than the sum of its proper divisors (194586138).

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

121616190 is a wasteful number, since it uses less digits than its factorization.

121616190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351304 (or 1351301 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 121616190 is about 11027.9730685199. The cubic root of 121616190 is about 495.4469180738.

The spelling of 121616190 in words is "one hundred twenty-one million, six hundred sixteen thousand, one hundred ninety".