1211222322 has 24 divisors (see below), whose sum is σ = 2721512976. Its totient is φ = 403740612.

The previous prime is 1211222291. The next prime is 1211222347. The reversal of 1211222322 is 2232221121.

1211222322 is a `hidden beast` number, since 121 + 1 + 222 + 322 = 666.

It is a super-2 number, since 2×1211222322² = 2934119026622143368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1211222295 and 1211222304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1245628 + ... + 1246599.

It is an arithmetic number, because the mean of its divisors is an integer number (113396374).

Almost surely, 2^1211222322 is an apocalyptic number.

1211222322 is an abundant number, since it is smaller than the sum of its proper divisors (1510290654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211222322 is an equidigital number, since it uses as much as digits as its factorization.

1211222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492244 (or 2492232 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1211222322 is about 34802.6194703790. The cubic root of 1211222322 is about 1065.9609339325.

Adding to 1211222322 its reverse (2232221121), we get a palindrome (3443443443).

The spelling of 1211222322 in words is "one billion, two hundred eleven million, two hundred twenty-two thousand, three hundred twenty-two".