2101221201013 has 16 divisors (see below), whose sum is σ = 2446869911040. Its totient is φ = 1784175951600.

The previous prime is 2101221200987. The next prime is 2101221201043. The reversal of 2101221201013 is 3101021221012.

It is a cyclic number.

It is not a de Polignac number, because 2101221201013 - 2¹³ = 2101221192821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101221201043) 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, 70785795 + ... + 70815472.

It is an arithmetic number, because the mean of its divisors is an integer number (152929369440).

Almost surely, 2^{2101221201013} is an apocalyptic number.

It is an amenable number.

2101221201013 is a deficient number, since it is larger than the sum of its proper divisors (345648710027).

2101221201013 is a wasteful number, since it uses less digits than its factorization.

2101221201013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141601368.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2101221201013 its reverse (3101021221012), we get a palindrome (5202242422025).

The spelling of 2101221201013 in words is "two trillion, one hundred one billion, two hundred twenty-one million, two hundred one thousand, thirteen".