1021201122202 has 4 divisors (see below), whose sum is σ = 1531801683306. Its totient is φ = 510600561100.

The previous prime is 1021201122169. The next prime is 1021201122307. The reversal of 1021201122202 is 2022211021201.

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., 923369168241 + 97831953961 = 960921^2 + 312781^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255300280549 + ... + 255300280552.

Almost surely, 2^{1021201122202} is an apocalyptic number.

1021201122202 is a deficient number, since it is larger than the sum of its proper divisors (510600561104).

1021201122202 is an equidigital number, since it uses as much as digits as its factorization.

1021201122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510600561103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021201122202 its reverse (2022211021201), we get a palindrome (3043412143403).

The spelling of 1021201122202 in words is "one trillion, twenty-one billion, two hundred one million, one hundred twenty-two thousand, two hundred two".