1222201831 has 2 divisors, whose sum is σ = 1222201832. Its totient is φ = 1222201830.

The previous prime is 1222201819. The next prime is 1222201861. The reversal of 1222201831 is 1381022221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1381022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222201831 - 2⁷ = 1222201703 is a prime.

It is a super-2 number, since 2×1222201831² = 2987554631399505122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222201861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611100915 + 611100916.

It is an arithmetic number, because the mean of its divisors is an integer number (611100916).

Almost surely, 2^1222201831 is an apocalyptic number.

1222201831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222201831 is an equidigital number, since it uses as much as digits as its factorization.

1222201831 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 22.

The square root of 1222201831 is about 34960.0033037756. The cubic root of 1222201831 is about 1069.1721640069.

The spelling of 1222201831 in words is "one billion, two hundred twenty-two million, two hundred one thousand, eight hundred thirty-one".