2132620021 has 16 divisors (see below), whose sum is σ = 2566850560. Its totient is φ = 1730879280.

The previous prime is 2132619997. The next prime is 2132620027. The reversal of 2132620021 is 1200262312.

It is a cyclic number.

It is not a de Polignac number, because 2132620021 - 2⁹ = 2132619509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132620027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464680 + ... + 469246.

It is an arithmetic number, because the mean of its divisors is an integer number (160428160).

Almost surely, 2^2132620021 is an apocalyptic number.

It is an amenable number.

2132620021 is a deficient number, since it is larger than the sum of its proper divisors (434230539).

2132620021 is a wasteful number, since it uses less digits than its factorization.

2132620021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2132620021 is about 46180.2990570654. The cubic root of 2132620021 is about 1287.1756852536.

Adding to 2132620021 its reverse (1200262312), we get a palindrome (3332882333).

The spelling of 2132620021 in words is "two billion, one hundred thirty-two million, six hundred twenty thousand, twenty-one".