2121457886422 has 16 divisors (see below), whose sum is σ = 3636803681280. Its totient is φ = 909191553768.

The previous prime is 2121457886399. The next prime is 2121457886491. The reversal of 2121457886422 is 2246887541212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121457886422.

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, 4863643 + ... + 5281849.

It is an arithmetic number, because the mean of its divisors is an integer number (227300230080).

Almost surely, 2^{2121457886422} is an apocalyptic number.

2121457886422 is a deficient number, since it is larger than the sum of its proper divisors (1515345794858).

2121457886422 is a wasteful number, since it uses less digits than its factorization.

2121457886422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780555.

The product of its digits is 3440640, while the sum is 52.

The spelling of 2121457886422 in words is "two trillion, one hundred twenty-one billion, four hundred fifty-seven million, eight hundred eighty-six thousand, four hundred twenty-two".