2213123021031 has 16 divisors (see below), whose sum is σ = 3177917981280. Its totient is φ = 1361878869120.

The previous prime is 2213123021009. The next prime is 2213123021051. The reversal of 2213123021031 is 1301203213122.

It is not a de Polignac number, because 2213123021031 - 2¹³ = 2213123012839 is a prime.

It is a super-2 number, since 2×2213123021031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2213123020989 and 2213123021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213123021051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378685 + ... + 2137673.

It is an arithmetic number, because the mean of its divisors is an integer number (198619873830).

Almost surely, 2^{2213123021031} is an apocalyptic number.

2213123021031 is a deficient number, since it is larger than the sum of its proper divisors (964794960249).

2213123021031 is a wasteful number, since it uses less digits than its factorization.

2213123021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791266.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2213123021031 its reverse (1301203213122), we get a palindrome (3514326234153).

The spelling of 2213123021031 in words is "two trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-one thousand, thirty-one".