201121112222122 has 4 divisors (see below), whose sum is σ = 301681668333186. Its totient is φ = 100560556111060.

The previous prime is 201121112222101. The next prime is 201121112222143. The reversal of 201121112222122 is 221222211121102.

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

It is an interprime number because it is at equal distance from previous prime (201121112222101) and next prime (201121112222143).

It can be written as a sum of positive squares in only one way, i.e., 117375534332001 + 83745577890121 = 10833999^2 + 9151261^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201121112222093 and 201121112222102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50280278055529 + ... + 50280278055532.

Almost surely, 2^{201121112222122} is an apocalyptic number.

201121112222122 is a deficient number, since it is larger than the sum of its proper divisors (100560556111064).

201121112222122 is a wasteful number, since it uses less digits than its factorization.

201121112222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100560556111063.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 201121112222122 its reverse (221222211121102), we get a palindrome (422343323343224).

The spelling of 201121112222122 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".