201020220002122 has 4 divisors (see below), whose sum is σ = 301530330003186. Its totient is φ = 100510110001060.

The previous prime is 201020220002117. The next prime is 201020220002131. The reversal of 201020220002122 is 221200022020102.

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., 195830384711481 + 5189835290641 = 13993941^2 + 2278121^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201020220002096 and 201020220002105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50255055000529 + ... + 50255055000532.

Almost surely, 2^{201020220002122} is an apocalyptic number.

201020220002122 is a deficient number, since it is larger than the sum of its proper divisors (100510110001064).

201020220002122 is a wasteful number, since it uses less digits than its factorization.

201020220002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100510110001063.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201020220002122 its reverse (221200022020102), we get a palindrome (422220242022224).

The spelling of 201020220002122 in words is "two hundred one trillion, twenty billion, two hundred twenty million, two thousand, one hundred twenty-two".