1220222011122 has 24 divisors (see below), whose sum is σ = 2643837919164. Its totient is φ = 406737045504.

The previous prime is 1220222011111. The next prime is 1220222011123. The reversal of 1220222011122 is 2211102220221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1169493007761 + 50729003361 = 1081431^2 + 225231^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1220222011095 and 1220222011104.

It is not an unprimeable number, because it can be changed into a prime (1220222011123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2452818 + ... + 2908050.

Almost surely, 2^{1220222011122} is an apocalyptic number.

1220222011122 is an abundant number, since it is smaller than the sum of its proper divisors (1423615908042).

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

1220222011122 is a wasteful number, since it uses less digits than its factorization.

1220222011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604154 (or 604151 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1220222011122 its reverse (2211102220221), we get a palindrome (3431324231343).

The spelling of 1220222011122 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, eleven thousand, one hundred twenty-two".