10201211010021 has 16 divisors (see below), whose sum is σ = 13611982211840. Its totient is φ = 6795625559040.

The previous prime is 10201211010019. The next prime is 10201211010037. The reversal of 10201211010021 is 12001011210201.

It is not a de Polignac number, because 10201211010021 - 2¹ = 10201211010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10201211009979 and 10201211010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201211010091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20532225 + ... + 21023193.

It is an arithmetic number, because the mean of its divisors is an integer number (850748888240).

Almost surely, 2^{10201211010021} is an apocalyptic number.

It is an amenable number.

10201211010021 is a deficient number, since it is larger than the sum of its proper divisors (3410771201819).

10201211010021 is a wasteful number, since it uses less digits than its factorization.

10201211010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496236.

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

Adding to 10201211010021 its reverse (12001011210201), we get a palindrome (22202222220222).

The spelling of 10201211010021 in words is "ten trillion, two hundred one billion, two hundred eleven million, ten thousand, twenty-one".