2122215431 has 16 divisors (see below), whose sum is σ = 2605152000. Its totient is φ = 1723297464.

The previous prime is 2122215397. The next prime is 2122215439. The reversal of 2122215431 is 1345122212.

It is a de Polignac number, because none of the positive numbers 2^k-2122215431 is a prime.

It is a super-2 number, since 2×2122215431² = 9007596671149031522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2122215397 and 2122215406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122215439) 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, 156305 + ... + 169338.

It is an arithmetic number, because the mean of its divisors is an integer number (162822000).

Almost surely, 2^2122215431 is an apocalyptic number.

2122215431 is a deficient number, since it is larger than the sum of its proper divisors (482936569).

2122215431 is an equidigital number, since it uses as much as digits as its factorization.

2122215431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325683 (or 325669 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2122215431 is about 46067.5094942195. The cubic root of 2122215431 is about 1285.0789882153.

Adding to 2122215431 its reverse (1345122212), we get a palindrome (3467337643).

The spelling of 2122215431 in words is "two billion, one hundred twenty-two million, two hundred fifteen thousand, four hundred thirty-one".