2101211222013 has 6 divisors (see below), whose sum is σ = 3035082876254. Its totient is φ = 1400807481336.

The previous prime is 2101211221997. The next prime is 2101211222039. The reversal of 2101211222013 is 3102221121012.

It can be written as a sum of positive squares in only one way, i.e., 2093988431844 + 7222790169 = 1447062^2 + 84987^2 .

It is not a de Polignac number, because 2101211222013 - 2⁴ = 2101211221997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101211222063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116733956770 + ... + 116733956787.

Almost surely, 2^{2101211222013} is an apocalyptic number.

It is an amenable number.

2101211222013 is a deficient number, since it is larger than the sum of its proper divisors (933871654241).

2101211222013 is a wasteful number, since it uses less digits than its factorization.

2101211222013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233467913563 (or 233467913560 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2101211222013 its reverse (3102221121012), we get a palindrome (5203432343025).

The spelling of 2101211222013 in words is "two trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, thirteen".