20101011220101 has 32 divisors (see below), whose sum is σ = 30736203337728. Its totient is φ = 11446511964480.

The previous prime is 20101011220097. The next prime is 20101011220123. The reversal of 20101011220101 is 10102211010102.

It is not a de Polignac number, because 20101011220101 - 2² = 20101011220097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101011220181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141614196 + ... + 141756066.

It is an arithmetic number, because the mean of its divisors is an integer number (960506354304).

Almost surely, 2^{20101011220101} is an apocalyptic number.

20101011220101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20101011220101 is a deficient number, since it is larger than the sum of its proper divisors (10635192117627).

20101011220101 is a wasteful number, since it uses less digits than its factorization.

20101011220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165201.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101011220101 its reverse (10102211010102), we get a palindrome (30203222230203).

The spelling of 20101011220101 in words is "twenty trillion, one hundred one billion, eleven million, two hundred twenty thousand, one hundred one".