1211122202022 has 24 divisors (see below), whose sum is σ = 2624307039120. Its totient is φ = 403675256880.

The previous prime is 1211122202011. The next prime is 1211122202033. The reversal of 1211122202022 is 2202022211121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1211122202011) and next prime (1211122202033).

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 = 1211122201986 and 1211122202004.

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, 2445754 + ... + 2898957.

It is an arithmetic number, because the mean of its divisors is an integer number (109346126630).

Almost surely, 2^{1211122202022} is an apocalyptic number.

1211122202022 is an abundant number, since it is smaller than the sum of its proper divisors (1413184837098).

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

1211122202022 is a wasteful number, since it uses less digits than its factorization.

1211122202022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357308 (or 5357305 counting only the distinct ones).

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

Adding to 1211122202022 its reverse (2202022211121), we get a palindrome (3413144413143).

Subtracting 1211122202022 from its reverse (2202022211121), we obtain a palindrome (990900009099).

The spelling of 1211122202022 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, twenty-two".