2522222021231 has 4 divisors (see below), whose sum is σ = 2751514932264. Its totient is φ = 2292929110200.

The previous prime is 2522222021203. The next prime is 2522222021309. The reversal of 2522222021231 is 1321202222252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2522222021231 - 2¹⁰ = 2522222020207 is a prime.

It is a super-2 number, since 2×2522222021231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2522222021231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522222021201) 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 3 ways as a sum of consecutive naturals, for example, 114646455500 + ... + 114646455521.

It is an arithmetic number, because the mean of its divisors is an integer number (687878733066).

Almost surely, 2^{2522222021231} is an apocalyptic number.

2522222021231 is a deficient number, since it is larger than the sum of its proper divisors (229292911033).

2522222021231 is a wasteful number, since it uses less digits than its factorization.

2522222021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229292911032.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 2522222021231 its reverse (1321202222252), we get a palindrome (3843424243483).

It can be divided in two parts, 2522222021 and 231, that added together give a palindrome (2522222252).

The spelling of 2522222021231 in words is "two trillion, five hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred thirty-one".