1222011040 has 24 divisors (see below), whose sum is σ = 2887001460. Its totient is φ = 488804352.

The previous prime is 1222011031. The next prime is 1222011047. The reversal of 1222011040 is 401102221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1210204944 + 11806096 = 34788^2 + 3436^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222011040.

It is not an unprimeable number, because it can be changed into a prime (1222011047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818625 + ... + 3818944.

Almost surely, 2^1222011040 is an apocalyptic number.

1222011040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222011040 is an abundant number, since it is smaller than the sum of its proper divisors (1664990420).

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

1222011040 is an equidigital number, since it uses as much as digits as its factorization.

1222011040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637584 (or 7637576 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1222011040 is about 34957.2744933011. The cubic root of 1222011040 is about 1069.1165269763.

Adding to 1222011040 its reverse (401102221), we get a palindrome (1623113261).

The spelling of 1222011040 in words is "one billion, two hundred twenty-two million, eleven thousand, forty".