1942221209886 has 96 divisors (see below), whose sum is σ = 4254736502016. Its totient is φ = 640277664000.

The previous prime is 1942221209849. The next prime is 1942221209891. The reversal of 1942221209886 is 6889021222491.

1942221209886 is a `hidden beast` number, since 1 + 9 + 422 + 2 + 1 + 209 + 8 + 8 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1427053846 + ... + 1427055206.

It is an arithmetic number, because the mean of its divisors is an integer number (44320171896).

Almost surely, 2^{1942221209886} is an apocalyptic number.

1942221209886 is an abundant number, since it is smaller than the sum of its proper divisors (2312515292130).

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

1942221209886 is a wasteful number, since it uses less digits than its factorization.

1942221209886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118 (or 3115 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 1942221209886 in words is "one trillion, nine hundred forty-two billion, two hundred twenty-one million, two hundred nine thousand, eight hundred eighty-six".