20120122201011 has 16 divisors (see below), whose sum is σ = 30659633241600. Its totient is φ = 11497062907008.

The previous prime is 20120122200977. The next prime is 20120122201019. The reversal of 20120122201011 is 11010222102102.

It is not a de Polignac number, because 20120122201011 - 2⁹ = 20120122200499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120122201019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4580166 + ... + 7824203.

It is an arithmetic number, because the mean of its divisors is an integer number (1916227077600).

Almost surely, 2^{20120122201011} is an apocalyptic number.

20120122201011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20120122201011 is a deficient number, since it is larger than the sum of its proper divisors (10539511040589).

20120122201011 is a wasteful number, since it uses less digits than its factorization.

20120122201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481618.

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

Adding to 20120122201011 its reverse (11010222102102), we get a palindrome (31130344303113).

The spelling of 20120122201011 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, two hundred one thousand, eleven".