2120101571101 has 4 divisors (see below), whose sum is σ = 2122013295900. Its totient is φ = 2118189846304.

The previous prime is 2120101571089. The next prime is 2120101571111. The reversal of 2120101571101 is 1011751010212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1159164456025 + 960937115076 = 1076645^2 + 980274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120101571101 - 2⁵ = 2120101571069 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 (2120101571111) 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, 955860736 + ... + 955862953.

It is an arithmetic number, because the mean of its divisors is an integer number (530503323975).

Almost surely, 2^{2120101571101} is an apocalyptic number.

It is an amenable number.

2120101571101 is a deficient number, since it is larger than the sum of its proper divisors (1911724799).

2120101571101 is a wasteful number, since it uses less digits than its factorization.

2120101571101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911724798.

The product of its (nonzero) digits is 140, while the sum is 22.

Adding to 2120101571101 its reverse (1011751010212), we get a palindrome (3131852581313).

The spelling of 2120101571101 in words is "two trillion, one hundred twenty billion, one hundred one million, five hundred seventy-one thousand, one hundred one".