2120101101 has 16 divisors (see below), whose sum is σ = 3145048320. Its totient is φ = 1411529760.

The previous prime is 2120101099. The next prime is 2120101133. The reversal of 2120101101 is 1011010212.

It is a happy number.

It is not a de Polignac number, because 2120101101 - 2¹ = 2120101099 is a prime.

It is a super-2 number, since 2×2120101101² = 8989657356922824402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120101001) 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, 31045 + ... + 72138.

It is an arithmetic number, because the mean of its divisors is an integer number (196565520).

Almost surely, 2^2120101101 is an apocalyptic number.

It is an amenable number.

2120101101 is a deficient number, since it is larger than the sum of its proper divisors (1024947219).

2120101101 is a wasteful number, since it uses less digits than its factorization.

2120101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103953 (or 103947 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2120101101 is about 46044.5556064992. Note that the first 3 decimals coincide. The cubic root of 2120101101 is about 1284.6520783855.

Adding to 2120101101 its reverse (1011010212), we get a palindrome (3131111313).

The spelling of 2120101101 in words is "two billion, one hundred twenty million, one hundred one thousand, one hundred one".