2231212201 has 4 divisors (see below), whose sum is σ = 2231634832. Its totient is φ = 2230789572.

The previous prime is 2231212187. The next prime is 2231212211. The reversal of 2231212201 is 1022121322.

It is a happy number.

2231212201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1022121322 = 2 ⋅511060661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231212201 is a prime.

It is a super-3 number, since 3×2231212201³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231212211) 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, 203295 + ... + 213988.

It is an arithmetic number, because the mean of its divisors is an integer number (557908708).

Almost surely, 2^2231212201 is an apocalyptic number.

It is an amenable number.

2231212201 is a deficient number, since it is larger than the sum of its proper divisors (422631).

2231212201 is an equidigital number, since it uses as much as digits as its factorization.

2231212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422630.

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

The square root of 2231212201 is about 47235.7089604888. The cubic root of 2231212201 is about 1306.7132415704.

Adding to 2231212201 its reverse (1022121322), we get a palindrome (3253333523).

The spelling of 2231212201 in words is "two billion, two hundred thirty-one million, two hundred twelve thousand, two hundred one".