211302321121 has 2 divisors, whose sum is σ = 211302321122. Its totient is φ = 211302321120.

The previous prime is 211302321103. The next prime is 211302321127. The reversal of 211302321121 is 121123203112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129340929600 + 81961391521 = 359640^2 + 286289^2 .

It is a cyclic number.

It is not a de Polignac number, because 211302321121 - 2²¹ = 211300223969 is a prime.

It is a super-2 number, since 2×211302321121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211302321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651160560 + 105651160561.

It is an arithmetic number, because the mean of its divisors is an integer number (105651160561).

Almost surely, 2^211302321121 is an apocalyptic number.

It is an amenable number.

211302321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211302321121 is an equidigital number, since it uses as much as digits as its factorization.

211302321121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211302321121 its reverse (121123203112), we get a palindrome (332425524233).

The spelling of 211302321121 in words is "two hundred eleven billion, three hundred two million, three hundred twenty-one thousand, one hundred twenty-one".