201210211178453 has 2 divisors, whose sum is σ = 201210211178454. Its totient is φ = 201210211178452.

The previous prime is 201210211178443. The next prime is 201210211178479. The reversal of 201210211178453 is 354871112012102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156752227925329 + 44457983253124 = 12520073^2 + 6667682^2 .

It is a cyclic number.

It is not a de Polignac number, because 201210211178453 - 2²⁶ = 201210144069589 is a prime.

It is a super-2 number, since 2×201210211178453² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201210211178443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605105589226 + 100605105589227.

It is an arithmetic number, because the mean of its divisors is an integer number (100605105589227).

Almost surely, 2^{201210211178453} is an apocalyptic number.

It is an amenable number.

201210211178453 is a deficient number, since it is larger than the sum of its proper divisors (1).

201210211178453 is an equidigital number, since it uses as much as digits as its factorization.

201210211178453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 201210211178453 in words is "two hundred one trillion, two hundred ten billion, two hundred eleven million, one hundred seventy-eight thousand, four hundred fifty-three".