1211122022202 has 24 divisors (see below), whose sum is σ = 2631247859136. Its totient is φ = 402607318536.

The previous prime is 1211122022101. The next prime is 1211122022203. The reversal of 1211122022202 is 2022202211121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1211122022203) 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, 91661728 + ... + 91674939.

It is an arithmetic number, because the mean of its divisors is an integer number (109635327464).

Almost surely, 2^{1211122022202} is an apocalyptic number.

1211122022202 is an abundant number, since it is smaller than the sum of its proper divisors (1420125836934).

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

1211122022202 is a wasteful number, since it uses less digits than its factorization.

1211122022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183337042 (or 183337039 counting only the distinct ones).

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

Adding to 1211122022202 its reverse (2022202211121), we get a palindrome (3233324233323).

The spelling of 1211122022202 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, twenty-two thousand, two hundred two".