201011222122 has 4 divisors (see below), whose sum is σ = 301516833186. Its totient is φ = 100505611060.

The previous prime is 201011222077. The next prime is 201011222123. The reversal of 201011222122 is 221222110102.

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., 198683256121 + 2327966001 = 445739^2 + 48249^2 .

It is a super-2 number, since 2×201011222122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201011222096 and 201011222105.

It is not an unprimeable number, because it can be changed into a prime (201011222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50252805529 + ... + 50252805532.

Almost surely, 2^201011222122 is an apocalyptic number.

201011222122 is a deficient number, since it is larger than the sum of its proper divisors (100505611064).

201011222122 is a wasteful number, since it uses less digits than its factorization.

201011222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100505611063.

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

Adding to 201011222122 its reverse (221222110102), we get a palindrome (422233332224).

The spelling of 201011222122 in words is "two hundred one billion, eleven million, two hundred twenty-two thousand, one hundred twenty-two".