7422170021 has 4 divisors (see below), whose sum is σ = 8482480032. Its totient is φ = 6361860012.

The previous prime is 7422170011. The next prime is 7422170047. The reversal of 7422170021 is 1200712247.

7422170021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1200712247 = 7 ⋅171530321.

It is a cyclic number.

It is not a de Polignac number, because 7422170021 - 2¹⁰ = 7422168997 is a prime.

It is a super-2 number, since 2×7422170021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7422170011) 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, 530154995 + ... + 530155008.

It is an arithmetic number, because the mean of its divisors is an integer number (2120620008).

Almost surely, 2^7422170021 is an apocalyptic number.

It is an amenable number.

7422170021 is a deficient number, since it is larger than the sum of its proper divisors (1060310011).

7422170021 is a wasteful number, since it uses less digits than its factorization.

7422170021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060310010.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 7422170021 is about 86152.0169293790. The cubic root of 7422170021 is about 1950.6392837991.

Adding to 7422170021 its reverse (1200712247), we get a palindrome (8622882268).

The spelling of 7422170021 in words is "seven billion, four hundred twenty-two million, one hundred seventy thousand, twenty-one".