1122221431 has 4 divisors (see below), whose sum is σ = 1122288552. Its totient is φ = 1122154312.

The previous prime is 1122221423. The next prime is 1122221437. The reversal of 1122221431 is 1341222211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1122221431 - 2³ = 1122221423 is a prime.

It is a super-2 number, since 2×1122221431² = 2518761880391375522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122221399 and 1122221408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122221437) 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, 13761 + ... + 49333.

It is an arithmetic number, because the mean of its divisors is an integer number (280572138).

Almost surely, 2^1122221431 is an apocalyptic number.

1122221431 is a deficient number, since it is larger than the sum of its proper divisors (67121).

1122221431 is an equidigital number, since it uses as much as digits as its factorization.

1122221431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67120.

The product of its digits is 192, while the sum is 19.

The square root of 1122221431 is about 33499.5735943012. The cubic root of 1122221431 is about 1039.1849602309.

Adding to 1122221431 its reverse (1341222211), we get a palindrome (2463443642).

The spelling of 1122221431 in words is "one billion, one hundred twenty-two million, two hundred twenty-one thousand, four hundred thirty-one".