2120101331 has 4 divisors (see below), whose sum is σ = 2244813192. Its totient is φ = 1995389472.

The previous prime is 2120101279. The next prime is 2120101343. The reversal of 2120101331 is 1331010212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120101331 is a prime.

It is a super-3 number, since 3×2120101331³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120101351) 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, 62355905 + ... + 62355938.

It is an arithmetic number, because the mean of its divisors is an integer number (561203298).

Almost surely, 2^2120101331 is an apocalyptic number.

2120101331 is a deficient number, since it is larger than the sum of its proper divisors (124711861).

2120101331 is a wasteful number, since it uses less digits than its factorization.

2120101331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124711860.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2120101331 is about 46044.5581040800. The cubic root of 2120101331 is about 1284.6521248409.

Adding to 2120101331 its reverse (1331010212), we get a palindrome (3451111543).

The spelling of 2120101331 in words is "two billion, one hundred twenty million, one hundred one thousand, three hundred thirty-one".