1211222324 has 36 divisors (see below), whose sum is σ = 2430267084. Its totient is φ = 526136832.

The previous prime is 1211222291. The next prime is 1211222347. The reversal of 1211222324 is 4232221121.

It can be written as a sum of positive squares in 6 ways, for example, as 172449424 + 1038772900 = 13132^2 + 32230^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211222296 and 1211222305.

It is a congruent number.

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, 41207 + ... + 64190.

It is an arithmetic number, because the mean of its divisors is an integer number (67507419).

Almost surely, 2^1211222324 is an apocalyptic number.

It is an amenable number.

1211222324 is an abundant number, since it is smaller than the sum of its proper divisors (1219044760).

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

1211222324 is a wasteful number, since it uses less digits than its factorization.

1211222324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105444 (or 105429 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 1211222324 is about 34802.6194991124. The cubic root of 1211222324 is about 1065.9609345192.

Adding to 1211222324 its reverse (4232221121), we get a palindrome (5443443445).

The spelling of 1211222324 in words is "one billion, two hundred eleven million, two hundred twenty-two thousand, three hundred twenty-four".