2133212021 has 8 divisors (see below), whose sum is σ = 2206944000. Its totient is φ = 2059787520.

The previous prime is 2133212017. The next prime is 2133212041. The reversal of 2133212021 is 1202123312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2133212021 - 2² = 2133212017 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 (2133212041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62711 + ... + 90548.

It is an arithmetic number, because the mean of its divisors is an integer number (275868000).

Almost surely, 2^2133212021 is an apocalyptic number.

It is an amenable number.

2133212021 is a deficient number, since it is larger than the sum of its proper divisors (73731979).

2133212021 is a wasteful number, since it uses less digits than its factorization.

2133212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153739.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2133212021 is about 46186.7082719693. The cubic root of 2133212021 is about 1287.2947778095.

Adding to 2133212021 its reverse (1202123312), we get a palindrome (3335335333).

The spelling of 2133212021 in words is "two billion, one hundred thirty-three million, two hundred twelve thousand, twenty-one".