221134690253 has 2 divisors, whose sum is σ = 221134690254. Its totient is φ = 221134690252.

The previous prime is 221134690247. The next prime is 221134690267. The reversal of 221134690253 is 352096431122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212044593289 + 9090096964 = 460483^2 + 95342^2 .

It is a cyclic number.

It is not a de Polignac number, because 221134690253 - 2¹⁴ = 221134673869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221134690853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110567345126 + 110567345127.

It is an arithmetic number, because the mean of its divisors is an integer number (110567345127).

Almost surely, 2^221134690253 is an apocalyptic number.

It is an amenable number.

221134690253 is a deficient number, since it is larger than the sum of its proper divisors (1).

221134690253 is an equidigital number, since it uses as much as digits as its factorization.

221134690253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 221134690253 in words is "two hundred twenty-one billion, one hundred thirty-four million, six hundred ninety thousand, two hundred fifty-three".