201020202122122 has 8 divisors (see below), whose sum is σ = 301551258838500. Its totient is φ = 100503115842624.

The previous prime is 201020202122081. The next prime is 201020202122219. The reversal of 201020202122122 is 221221202020102.

It can be written as a sum of positive squares in 2 ways, for example, as 195048625292361 + 5971576829761 = 13965981^2 + 2443681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×201020202122122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201020202122122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492573247 + ... + 3492630802.

Almost surely, 2^{201020202122122} is an apocalyptic number.

201020202122122 is a deficient number, since it is larger than the sum of its proper divisors (100531056716378).

201020202122122 is a wasteful number, since it uses less digits than its factorization.

201020202122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985218440.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201020202122122 its reverse (221221202020102), we get a palindrome (422241404142224).

The spelling of 201020202122122 in words is "two hundred one trillion, twenty billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-two".