2122100213 has 4 divisors (see below), whose sum is σ = 2123333568. Its totient is φ = 2120866860.

The previous prime is 2122100203. The next prime is 2122100251. The reversal of 2122100213 is 3120012212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122100213 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122100203) 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, 614093 + ... + 617538.

It is an arithmetic number, because the mean of its divisors is an integer number (530833392).

Almost surely, 2^2122100213 is an apocalyptic number.

It is an amenable number.

2122100213 is a deficient number, since it is larger than the sum of its proper divisors (1233355).

2122100213 is a wasteful number, since it uses less digits than its factorization.

2122100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233354.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2122100213 is about 46066.2589429617. The cubic root of 2122100213 is about 1285.0557315581.

Adding to 2122100213 its reverse (3120012212), we get a palindrome (5242112425).

The spelling of 2122100213 in words is "two billion, one hundred twenty-two million, one hundred thousand, two hundred thirteen".