20021201112101 has 4 divisors (see below), whose sum is σ = 22881372699552. Its totient is φ = 17161029524652.

The previous prime is 20021201112089. The next prime is 20021201112119. The reversal of 20021201112101 is 10121110212002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20021201112101 - 2¹⁸ = 20021200849957 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 (20021201712101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430085793715 + ... + 1430085793728.

It is an arithmetic number, because the mean of its divisors is an integer number (5720343174888).

Almost surely, 2^{20021201112101} is an apocalyptic number.

It is an amenable number.

20021201112101 is a deficient number, since it is larger than the sum of its proper divisors (2860171587451).

20021201112101 is an equidigital number, since it uses as much as digits as its factorization.

20021201112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860171587450.

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

Adding to 20021201112101 its reverse (10121110212002), we get a palindrome (30142311324103).

Subtracting from 20021201112101 its reverse (10121110212002), we obtain a palindrome (9900090900099).

The spelling of 20021201112101 in words is "twenty trillion, twenty-one billion, two hundred one million, one hundred twelve thousand, one hundred one".