2126642213 has 4 divisors (see below), whose sum is σ = 2126823360. Its totient is φ = 2126461068.

The previous prime is 2126642209. The next prime is 2126642249. The reversal of 2126642213 is 3122466212.

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 not a de Polignac number, because 2126642213 - 2² = 2126642209 is a prime.

It is a super-2 number, since 2×2126642213² = 9045214204227074738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126642113) 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, 71645 + ... + 96882.

It is an arithmetic number, because the mean of its divisors is an integer number (531705840).

Almost surely, 2^2126642213 is an apocalyptic number.

It is an amenable number.

2126642213 is a deficient number, since it is larger than the sum of its proper divisors (181147).

2126642213 is a wasteful number, since it uses less digits than its factorization.

2126642213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181146.

The product of its digits is 6912, while the sum is 29.

The square root of 2126642213 is about 46115.5311473261. The cubic root of 2126642213 is about 1285.9718937427.

The spelling of 2126642213 in words is "two billion, one hundred twenty-six million, six hundred forty-two thousand, two hundred thirteen".