2131223100223 has 32 divisors (see below), whose sum is σ = 2592782438400. Its totient is φ = 1710113969664.

The previous prime is 2131223100211. The next prime is 2131223100233. The reversal of 2131223100223 is 3220013221312.

It is a de Polignac number, because none of the positive numbers 2^k-2131223100223 is a prime.

It is a super-2 number, since 2×2131223100223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131223100194 and 2131223100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131223100233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17438413 + ... + 17560201.

It is an arithmetic number, because the mean of its divisors is an integer number (81024451200).

Almost surely, 2^{2131223100223} is an apocalyptic number.

2131223100223 is a deficient number, since it is larger than the sum of its proper divisors (461559338177).

2131223100223 is a wasteful number, since it uses less digits than its factorization.

2131223100223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122599.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2131223100223 its reverse (3220013221312), we get a palindrome (5351236321535).

The spelling of 2131223100223 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-three million, one hundred thousand, two hundred twenty-three".