2120212231 has 4 divisors (see below), whose sum is σ = 2133219832. Its totient is φ = 2107204632.

The previous prime is 2120212229. The next prime is 2120212249. The reversal of 2120212231 is 1322120212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2120212231 - 2¹ = 2120212229 is a prime.

It is a super-2 number, since 2×2120212231² = 8990599808963994722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212331) 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, 6503556 + ... + 6503881.

It is an arithmetic number, because the mean of its divisors is an integer number (533304958).

Almost surely, 2^2120212231 is an apocalyptic number.

2120212231 is a deficient number, since it is larger than the sum of its proper divisors (13007601).

2120212231 is a wasteful number, since it uses less digits than its factorization.

2120212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13007600.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2120212231 is about 46045.7623565948. The cubic root of 2120212231 is about 1284.6745239961.

Adding to 2120212231 its reverse (1322120212), we get a palindrome (3442332443).

It can be divided in two parts, 21202 and 12231, that added together give a palindrome (33433).

The spelling of 2120212231 in words is "two billion, one hundred twenty million, two hundred twelve thousand, two hundred thirty-one".