20122122011 has 8 divisors (see below), whose sum is σ = 20546666544. Its totient is φ = 19701601920.

The previous prime is 20122122001. The next prime is 20122122019. The reversal of 20122122011 is 11022122102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122122011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122122019) 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, 996005 + ... + 1016006.

It is an arithmetic number, because the mean of its divisors is an integer number (2568333318).

Almost surely, 2^20122122011 is an apocalyptic number.

20122122011 is a deficient number, since it is larger than the sum of its proper divisors (424544533).

20122122011 is a wasteful number, since it uses less digits than its factorization.

20122122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012221.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20122122011 its reverse (11022122102), we get a palindrome (31144244113).

Subtracting from 20122122011 its reverse (11022122102), we obtain a palindrome (9099999909).

The spelling of 20122122011 in words is "twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, eleven".