2102122201213 has 4 divisors (see below), whose sum is σ = 2102125146588. Its totient is φ = 2102119255840.

The previous prime is 2102122201177. The next prime is 2102122201339. The reversal of 2102122201213 is 3121022212012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1933137079129 + 168985122084 = 1390373^2 + 411078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102122201213 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 (2102122201813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348993 + ... + 2079913.

It is an arithmetic number, because the mean of its divisors is an integer number (525531286647).

Almost surely, 2^{2102122201213} is an apocalyptic number.

It is an amenable number.

2102122201213 is a deficient number, since it is larger than the sum of its proper divisors (2945375).

2102122201213 is a wasteful number, since it uses less digits than its factorization.

2102122201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945374.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2102122201213 its reverse (3121022212012), we get a palindrome (5223144413225).

The spelling of 2102122201213 in words is "two trillion, one hundred two billion, one hundred twenty-two million, two hundred one thousand, two hundred thirteen".