20010010012101 has 24 divisors (see below), whose sum is σ = 29311911173376. Its totient is φ = 13151457859680.

The previous prime is 20010010012093. The next prime is 20010010012121. The reversal of 20010010012101 is 10121001001002.

It is a happy number.

It is not a de Polignac number, because 20010010012101 - 2³ = 20010010012093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010010012121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12094071 + ... + 13648683.

It is an arithmetic number, because the mean of its divisors is an integer number (1221329632224).

Almost surely, 2^{20010010012101} is an apocalyptic number.

It is an amenable number.

20010010012101 is a deficient number, since it is larger than the sum of its proper divisors (9301901161275).

20010010012101 is a wasteful number, since it uses less digits than its factorization.

20010010012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574833 (or 1574830 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20010010012101 its reverse (10121001001002), we get a palindrome (30131011013103).

The spelling of 20010010012101 in words is "twenty trillion, ten billion, ten million, twelve thousand, one hundred one".