21223030000031 has 16 divisors (see below), whose sum is σ = 22539698438400. Its totient is φ = 19927015452288.

The previous prime is 21223030000019. The next prime is 21223030000037. The reversal of 21223030000031 is 13000003032212.

It is a cyclic number.

It is not a de Polignac number, because 21223030000031 - 2²² = 21223025805727 is a prime.

It is a super-2 number, since 2×21223030000031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21223029999964 and 21223030000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223030000037) 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, 8432426 + ... + 10656071.

It is an arithmetic number, because the mean of its divisors is an integer number (1408731152400).

Almost surely, 2^{21223030000031} is an apocalyptic number.

21223030000031 is a deficient number, since it is larger than the sum of its proper divisors (1316668438369).

21223030000031 is a wasteful number, since it uses less digits than its factorization.

21223030000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19089038.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21223030000031 its reverse (13000003032212), we get a palindrome (34223033032243).

The spelling of 21223030000031 in words is "twenty-one trillion, two hundred twenty-three billion, thirty million, thirty-one", and thus it is an aban number.