2121662233 has 4 divisors (see below), whose sum is σ = 2141490960. Its totient is φ = 2101833508.

The previous prime is 2121662201. The next prime is 2121662261. The reversal of 2121662233 is 3322661212.

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 2121662233 - 2⁵ = 2121662201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121662273) 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, 9914203 + ... + 9914416.

It is an arithmetic number, because the mean of its divisors is an integer number (535372740).

Almost surely, 2^2121662233 is an apocalyptic number.

It is an amenable number.

2121662233 is a deficient number, since it is larger than the sum of its proper divisors (19828727).

2121662233 is a wasteful number, since it uses less digits than its factorization.

2121662233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19828726.

The product of its digits is 5184, while the sum is 28.

The square root of 2121662233 is about 46061.5048929146. The cubic root of 2121662233 is about 1284.9673179776.

The spelling of 2121662233 in words is "two billion, one hundred twenty-one million, six hundred sixty-two thousand, two hundred thirty-three".