2221425433021 has 4 divisors (see below), whose sum is σ = 2231386982272. Its totient is φ = 2211463883772.

The previous prime is 2221425432979. The next prime is 2221425433027. The reversal of 2221425433021 is 1203345241222.

It is a happy number.

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 2221425433021 - 2¹⁵ = 2221425400253 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 (2221425433027) 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, 4980774291 + ... + 4980774736.

It is an arithmetic number, because the mean of its divisors is an integer number (557846745568).

Almost surely, 2^{2221425433021} is an apocalyptic number.

It is an amenable number.

2221425433021 is a deficient number, since it is larger than the sum of its proper divisors (9961549251).

2221425433021 is an equidigital number, since it uses as much as digits as its factorization.

2221425433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961549250.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 2221425433021 in words is "two trillion, two hundred twenty-one billion, four hundred twenty-five million, four hundred thirty-three thousand, twenty-one".