7222012210021 has 4 divisors (see below), whose sum is σ = 8253728240032. Its totient is φ = 6190296180012.

The previous prime is 7222012209961. The next prime is 7222012210027. The reversal of 7222012210021 is 1200122102227.

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 not a de Polignac number, because 7222012210021 - 2²¹ = 7222010112869 is a prime.

It is a super-2 number, since 2×7222012210021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7222012209974 and 7222012210001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222012210027) 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, 515858014995 + ... + 515858015008.

It is an arithmetic number, because the mean of its divisors is an integer number (2063432060008).

Almost surely, 2^{7222012210021} is an apocalyptic number.

It is an amenable number.

7222012210021 is a deficient number, since it is larger than the sum of its proper divisors (1031716030011).

7222012210021 is a wasteful number, since it uses less digits than its factorization.

7222012210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031716030010.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 7222012210021 its reverse (1200122102227), we get a palindrome (8422134312248).

The spelling of 7222012210021 in words is "seven trillion, two hundred twenty-two billion, twelve million, two hundred ten thousand, twenty-one".