1222220431 has 2 divisors, whose sum is σ = 1222220432. Its totient is φ = 1222220430.

The previous prime is 1222220393. The next prime is 1222220449. The reversal of 1222220431 is 1340222221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222220431 - 2²⁵ = 1188665999 is a prime.

It is a super-2 number, since 2×1222220431² = 2987645563907651522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222220399 and 1222220408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222220731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110215 + 611110216.

It is an arithmetic number, because the mean of its divisors is an integer number (611110216).

Almost surely, 2^1222220431 is an apocalyptic number.

1222220431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222220431 is an equidigital number, since it uses as much as digits as its factorization.

1222220431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1222220431 is about 34960.2693210450. The cubic root of 1222220431 is about 1069.1775876886.

Adding to 1222220431 its reverse (1340222221), we get a palindrome (2562442652).

The spelling of 1222220431 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, four hundred thirty-one".