2131222203205 has 32 divisors (see below), whose sum is σ = 2652769461888. Its totient is φ = 1642867142400.

The previous prime is 2131222203151. The next prime is 2131222203211. The reversal of 2131222203205 is 5023022221312.

It is not a de Polignac number, because 2131222203205 - 2¹³ = 2131222195013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131222203205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3410634 + ... + 3986836.

It is an arithmetic number, because the mean of its divisors is an integer number (82899045684).

Almost surely, 2^{2131222203205} is an apocalyptic number.

It is an amenable number.

2131222203205 is a deficient number, since it is larger than the sum of its proper divisors (521547258683).

2131222203205 is a wasteful number, since it uses less digits than its factorization.

2131222203205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576517.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 2131222203205 its reverse (5023022221312), we get a palindrome (7154244424517).

The spelling of 2131222203205 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-two million, two hundred three thousand, two hundred five".