2120221110101 has 4 divisors (see below), whose sum is σ = 2120306755392. Its totient is φ = 2120135464812.

The previous prime is 2120221110083. The next prime is 2120221110143. The reversal of 2120221110101 is 1010111220212.

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 2120221110101 - 2⁶ = 2120221110037 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 (2120221110001) 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, 42785501 + ... + 42835026.

It is an arithmetic number, because the mean of its divisors is an integer number (530076688848).

Almost surely, 2^{2120221110101} is an apocalyptic number.

It is an amenable number.

2120221110101 is a deficient number, since it is larger than the sum of its proper divisors (85645291).

2120221110101 is an equidigital number, since it uses as much as digits as its factorization.

2120221110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85645290.

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

Adding to 2120221110101 its reverse (1010111220212), we get a palindrome (3130332330313).

It can be divided in two parts, 2120221 and 110101, that added together give a palindrome (2230322).

The spelling of 2120221110101 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred one".