1021122202202 has 4 divisors (see below), whose sum is σ = 1531683303306. Its totient is φ = 510561101100.

The previous prime is 1021122202159. The next prime is 1021122202211. The reversal of 1021122202202 is 2022022211201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 942532247281 + 78589954921 = 970841^2 + 280339^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255280550549 + ... + 255280550552.

Almost surely, 2^{1021122202202} is an apocalyptic number.

1021122202202 is a deficient number, since it is larger than the sum of its proper divisors (510561101104).

1021122202202 is an equidigital number, since it uses as much as digits as its factorization.

1021122202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510561101103.

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

Adding to 1021122202202 its reverse (2022022211201), we get a palindrome (3043144413403).

The spelling of 1021122202202 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred two thousand, two hundred two".