2132221021 has 16 divisors (see below), whose sum is σ = 2579932800. Its totient is φ = 1721400768.

The previous prime is 2132220991. The next prime is 2132221033. The reversal of 2132221021 is 1201222312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2132221021 - 2⁹ = 2132220509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2132220986 and 2132221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23326 + ... + 69343.

It is an arithmetic number, because the mean of its divisors is an integer number (161245800).

Almost surely, 2^2132221021 is an apocalyptic number.

It is an amenable number.

2132221021 is a deficient number, since it is larger than the sum of its proper divisors (447711779).

2132221021 is a wasteful number, since it uses less digits than its factorization.

2132221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92868.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2132221021 is about 46175.9788309896. The cubic root of 2132221021 is about 1287.0954060468.

Adding to 2132221021 its reverse (1201222312), we get a palindrome (3333443333).

The spelling of 2132221021 in words is "two billion, one hundred thirty-two million, two hundred twenty-one thousand, twenty-one".