201122122011 has 8 divisors (see below), whose sum is σ = 268372500480. Its totient is φ = 133976579112.

The previous prime is 201122121961. The next prime is 201122122021. The reversal of 201122122011 is 110221221102.

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

It is not a de Polignac number, because 201122122011 - 2⁷ = 201122121883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201122122021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26204415 + ... + 26212088.

It is an arithmetic number, because the mean of its divisors is an integer number (33546562560).

Almost surely, 2^201122122011 is an apocalyptic number.

201122122011 is a deficient number, since it is larger than the sum of its proper divisors (67250378469).

201122122011 is a wasteful number, since it uses less digits than its factorization.

201122122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52417785.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201122122011 its reverse (110221221102), we get a palindrome (311343343113).

Subtracting from 201122122011 its reverse (110221221102), we obtain a palindrome (90900900909).

The spelling of 201122122011 in words is "two hundred one billion, one hundred twenty-two million, one hundred twenty-two thousand, eleven".