20102102121101 has 36 divisors (see below), whose sum is σ = 27344128152096. Its totient is φ = 14459054369760.

The previous prime is 20102102121077. The next prime is 20102102121121. The reversal of 20102102121101 is 10112120120102.

It is not a de Polignac number, because 20102102121101 - 2⁶ = 20102102121037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102102121121) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70073711 + ... + 70359996.

It is an arithmetic number, because the mean of its divisors is an integer number (759559115336).

Almost surely, 2^{20102102121101} is an apocalyptic number.

It is an amenable number.

20102102121101 is a deficient number, since it is larger than the sum of its proper divisors (7242026030995).

20102102121101 is a wasteful number, since it uses less digits than its factorization.

20102102121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140433762 (or 140433738 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102102121101 its reverse (10112120120102), we get a palindrome (30214222241203).

The spelling of 20102102121101 in words is "twenty trillion, one hundred two billion, one hundred two million, one hundred twenty-one thousand, one hundred one".