2101662661012 has 24 divisors (see below), whose sum is σ = 3695110084512. Its totient is φ = 1045922700000.

The previous prime is 2101662660919. The next prime is 2101662661019.

2101662661012 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101662661019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735478 + ... + 2178130.

It is an arithmetic number, because the mean of its divisors is an integer number (153962920188).

Almost surely, 2^{2101662661012} is an apocalyptic number.

It is an amenable number.

2101662661012 is a deficient number, since it is larger than the sum of its proper divisors (1593447423500).

2101662661012 is a wasteful number, since it uses less digits than its factorization.

2101662661012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444359 (or 1444357 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 2101662661012 in words is "two trillion, one hundred one billion, six hundred sixty-two million, six hundred sixty-one thousand, twelve".