1022121220202 has 16 divisors (see below), whose sum is σ = 1563635556000. Its totient is φ = 500959008240.

The previous prime is 1022121220187. The next prime is 1022121220207. The reversal of 1022121220202 is 2020221212201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1022121220207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12368624 + ... + 12450987.

It is an arithmetic number, because the mean of its divisors is an integer number (97727222250).

Almost surely, 2^{1022121220202} is an apocalyptic number.

1022121220202 is a deficient number, since it is larger than the sum of its proper divisors (541514335798).

1022121220202 is a wasteful number, since it uses less digits than its factorization.

1022121220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24820021.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1022121220202 its reverse (2020221212201), we get a palindrome (3042342432403).

The spelling of 1022121220202 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred two".