223121211253 has 2 divisors, whose sum is σ = 223121211254. Its totient is φ = 223121211252.

The previous prime is 223121211239. The next prime is 223121211263. The reversal of 223121211253 is 352112121322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118340816049 + 104780395204 = 344007^2 + 323698^2 .

It is a cyclic number.

It is not a de Polignac number, because 223121211253 - 2¹³ = 223121203061 is a prime.

It is a super-3 number, since 3×223121211253³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223121211223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111560605626 + 111560605627.

It is an arithmetic number, because the mean of its divisors is an integer number (111560605627).

Almost surely, 2^223121211253 is an apocalyptic number.

It is an amenable number.

223121211253 is a deficient number, since it is larger than the sum of its proper divisors (1).

223121211253 is an equidigital number, since it uses as much as digits as its factorization.

223121211253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

Adding to 223121211253 its reverse (352112121322), we get a palindrome (575233332575).

The spelling of 223121211253 in words is "two hundred twenty-three billion, one hundred twenty-one million, two hundred eleven thousand, two hundred fifty-three".