2211201211122 has 24 divisors (see below), whose sum is σ = 4791826510380. Its totient is φ = 736930062240.

The previous prime is 2211201211103. The next prime is 2211201211133. The reversal of 2211201211122 is 2211121021122.

It can be written as a sum of positive squares in 2 ways, for example, as 2015068259961 + 196132951161 = 1419531^2 + 442869^2 .

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 = 2211201211095 and 2211201211104.

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, 11317797 + ... + 11511512.

Almost surely, 2^{2211201211122} is an apocalyptic number.

2211201211122 is an abundant number, since it is smaller than the sum of its proper divisors (2580625299258).

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

2211201211122 is a wasteful number, since it uses less digits than its factorization.

2211201211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22834698 (or 22834695 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211201211122 its reverse (2211121021122), we get a palindrome (4422322232244).

The spelling of 2211201211122 in words is "two trillion, two hundred eleven billion, two hundred one million, two hundred eleven thousand, one hundred twenty-two".