2021665012162 has 8 divisors (see below), whose sum is σ = 3032504162892. Its totient is φ = 1010830291200.

The previous prime is 2021665012141. The next prime is 2021665012181. The reversal of 2021665012162 is 2612105661202.

It can be written as a sum of positive squares in 2 ways, for example, as 1982973728761 + 38691283401 = 1408181^2 + 196701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500362 + ... + 2072122.

Almost surely, 2^{2021665012162} is an apocalyptic number.

2021665012162 is a deficient number, since it is larger than the sum of its proper divisors (1010839150730).

2021665012162 is a wasteful number, since it uses less digits than its factorization.

2021665012162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214884.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 2021665012162 in words is "two trillion, twenty-one billion, six hundred sixty-five million, twelve thousand, one hundred sixty-two".