2120111020101 has 4 divisors (see below), whose sum is σ = 2826814693472. Its totient is φ = 1413407346732.

The previous prime is 2120111020091. The next prime is 2120111020141. The reversal of 2120111020101 is 1010201110212.

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 not a de Polignac number, because 2120111020101 - 2⁷ = 2120111019973 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 (2120111020141) 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, 353351836681 + ... + 353351836686.

It is an arithmetic number, because the mean of its divisors is an integer number (706703673368).

Almost surely, 2^{2120111020101} is an apocalyptic number.

It is an amenable number.

2120111020101 is a deficient number, since it is larger than the sum of its proper divisors (706703673371).

2120111020101 is an equidigital number, since it uses as much as digits as its factorization.

2120111020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706703673370.

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

Adding to 2120111020101 its reverse (1010201110212), we get a palindrome (3130312130313).

The spelling of 2120111020101 in words is "two trillion, one hundred twenty billion, one hundred eleven million, twenty thousand, one hundred one".