1022131220202 has 12 divisors (see below), whose sum is σ = 2214617643810. Its totient is φ = 340710406728.

The previous prime is 1022131220183. The next prime is 1022131220221. The reversal of 1022131220202 is 2020221312201.

It is an interprime number because it is at equal distance from previous prime (1022131220183) and next prime (1022131220221).

It can be written as a sum of positive squares in only one way, i.e., 828065420361 + 194065799841 = 909981^2 + 440529^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56785067789 = 1022131220202 / (1 + 0 + 2 + 2 + 1 + 3 + 1 + 2 + 2 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28392533877 + ... + 28392533912.

Almost surely, 2^{1022131220202} is an apocalyptic number.

1022131220202 is an abundant number, since it is smaller than the sum of its proper divisors (1192486423608).

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

1022131220202 is a wasteful number, since it uses less digits than its factorization.

1022131220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56785067797 (or 56785067794 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1022131220202 its reverse (2020221312201), we get a palindrome (3042352532403).

The spelling of 1022131220202 in words is "one trillion, twenty-two billion, one hundred thirty-one million, two hundred twenty thousand, two hundred two".