2131201222 has 8 divisors (see below), whose sum is σ = 3227839056. Its totient is φ = 1055254872.

The previous prime is 2131201211. The next prime is 2131201273. The reversal of 2131201222 is 2221021312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2131201196 and 2131201205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5172613 + ... + 5173024.

It is an arithmetic number, because the mean of its divisors is an integer number (403479882).

Almost surely, 2^2131201222 is an apocalyptic number.

2131201222 is a deficient number, since it is larger than the sum of its proper divisors (1096637834).

2131201222 is a wasteful number, since it uses less digits than its factorization.

2131201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345742.

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

The square root of 2131201222 is about 46164.9349831666. The cubic root of 2131201222 is about 1286.8901759275.

Adding to 2131201222 its reverse (2221021312), we get a palindrome (4352222534).

The spelling of 2131201222 in words is "two billion, one hundred thirty-one million, two hundred one thousand, two hundred twenty-two".