1222011012 has 12 divisors (see below), whose sum is σ = 2851359056. Its totient is φ = 407337000.

The previous prime is 1222010989. The next prime is 1222011013. The reversal of 1222011012 is 2101102221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 101834251 = 1222011012 / (1 + 2 + 2 + 2 + 0 + 1 + 1 + 0 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (1222011013) 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, 50917114 + ... + 50917137.

Almost surely, 2^1222011012 is an apocalyptic number.

1222011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222011012 is an abundant number, since it is smaller than the sum of its proper divisors (1629348044).

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

1222011012 is a wasteful number, since it uses less digits than its factorization.

1222011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101834258 (or 101834256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222011012 is about 34957.2740928122. The cubic root of 1222011012 is about 1069.1165188108.

Adding to 1222011012 its reverse (2101102221), we get a palindrome (3323113233).

It can be divided in two parts, 12220 and 11012, that added together give a palindrome (23232).

The spelling of 1222011012 in words is "one billion, two hundred twenty-two million, eleven thousand, twelve".