21200223131293 has 2 divisors, whose sum is σ = 21200223131294. Its totient is φ = 21200223131292.

The previous prime is 21200223131287. The next prime is 21200223131357. The reversal of 21200223131293 is 39213132200212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12391899565369 + 8808323565924 = 3520213^2 + 2967882^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200223131293 - 2⁹ = 21200223130781 is a prime.

It is a super-2 number, since 2×21200223131293² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200223131203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600111565646 + 10600111565647.

It is an arithmetic number, because the mean of its divisors is an integer number (10600111565647).

Almost surely, 2^{21200223131293} is an apocalyptic number.

It is an amenable number.

21200223131293 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200223131293 is an equidigital number, since it uses as much as digits as its factorization.

21200223131293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 21200223131293 in words is "twenty-one trillion, two hundred billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred ninety-three".