121691622 has 16 divisors (see below), whose sum is σ = 262105200. Its totient is φ = 37443552.

The previous prime is 121691617. The next prime is 121691659. The reversal of 121691622 is 226196121.

It is a self number, because there is not a number n which added to its sum of digits gives 121691622.

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, 779997 + ... + 780152.

It is an arithmetic number, because the mean of its divisors is an integer number (16381575).

Almost surely, 2^121691622 is an apocalyptic number.

121691622 is an abundant number, since it is smaller than the sum of its proper divisors (140413578).

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

121691622 is a wasteful number, since it uses less digits than its factorization.

121691622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560167.

The product of its digits is 2592, while the sum is 30.

The square root of 121691622 is about 11031.3925684838. The cubic root of 121691622 is about 495.5493299535.

The spelling of 121691622 in words is "one hundred twenty-one million, six hundred ninety-one thousand, six hundred twenty-two".