20021012100122 has 16 divisors (see below), whose sum is σ = 32764542807744. Its totient is φ = 9099658200000.

The previous prime is 20021012100119. The next prime is 20021012100179. The reversal of 20021012100122 is 22100121012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021012100097 and 20021012100106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39836879 + ... + 40336322.

It is an arithmetic number, because the mean of its divisors is an integer number (2047783925484).

Almost surely, 2^{20021012100122} is an apocalyptic number.

20021012100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021012100122 is a deficient number, since it is larger than the sum of its proper divisors (12743530707622).

20021012100122 is a wasteful number, since it uses less digits than its factorization.

20021012100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80184565.

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

Adding to 20021012100122 its reverse (22100121012002), we get a palindrome (42121133112124).

The spelling of 20021012100122 in words is "twenty trillion, twenty-one billion, twelve million, one hundred thousand, one hundred twenty-two".