20010212102101 has 32 divisors (see below), whose sum is σ = 22278164106240. Its totient is φ = 17848173657600.

The previous prime is 20010212102053. The next prime is 20010212102119. The reversal of 20010212102101 is 10120121201002.

It is not a de Polignac number, because 20010212102101 - 2¹⁵ = 20010212069333 is a prime.

It is a super-2 number, since 2×20010212102101² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010212102501) 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, 1223035161 + ... + 1223051521.

It is an arithmetic number, because the mean of its divisors is an integer number (696192628320).

Almost surely, 2^{20010212102101} is an apocalyptic number.

It is an amenable number.

20010212102101 is a deficient number, since it is larger than the sum of its proper divisors (2267952004139).

20010212102101 is a wasteful number, since it uses less digits than its factorization.

20010212102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20797.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20010212102101 its reverse (10120121201002), we get a palindrome (30130333303103).

The spelling of 20010212102101 in words is "twenty trillion, ten billion, two hundred twelve million, one hundred two thousand, one hundred one".