20011002012122 has 32 divisors (see below), whose sum is σ = 32890570712064. Its totient is φ = 9055552913200.

The previous prime is 20011002012121. The next prime is 20011002012139. The reversal of 20011002012122 is 22121020011002.

It is a junction number, because it is equal to n+sod(n) for n = 20011002012097 and 20011002012106.

It is not an unprimeable number, because it can be changed into a prime (20011002012121) 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, 292169693 + ... + 292238175.

It is an arithmetic number, because the mean of its divisors is an integer number (1027830334752).

Almost surely, 2^{20011002012122} is an apocalyptic number.

20011002012122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20011002012122 is a deficient number, since it is larger than the sum of its proper divisors (12879568699942).

20011002012122 is a wasteful number, since it uses less digits than its factorization.

20011002012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127234.

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

Adding to 20011002012122 its reverse (22121020011002), we get a palindrome (42132022023124).

The spelling of 20011002012122 in words is "twenty trillion, eleven billion, two million, twelve thousand, one hundred twenty-two".