20101122112210 has 16 divisors (see below), whose sum is σ = 36236758119192. Its totient is φ = 8028284774400.

The previous prime is 20101122112139. The next prime is 20101122112213. The reversal of 20101122112210 is 1221122110102.

It can be written as a sum of positive squares in 4 ways, for example, as 15968199816529 + 4132922295681 = 3996023^2 + 2032959^2 .

It is a super-2 number, since 2×20101122112210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20101122112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1520501871 + ... + 1520515090.

Almost surely, 2^{20101122112210} is an apocalyptic number.

20101122112210 is a deficient number, since it is larger than the sum of its proper divisors (16135636006982).

20101122112210 is a wasteful number, since it uses less digits than its factorization.

20101122112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041017629.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20101122112210 its reverse (1221122110102), we get a palindrome (21322244222312).

The spelling of 20101122112210 in words is "twenty trillion, one hundred one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred ten".