210110001021121 has 2 divisors, whose sum is σ = 210110001021122. Its totient is φ = 210110001021120.

The previous prime is 210110001021047. The next prime is 210110001021131. The reversal of 210110001021121 is 121120100011012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149628894179521 + 60481106841600 = 12232289^2 + 7776960^2 .

It is a cyclic number.

It is not a de Polignac number, because 210110001021121 - 2²¹ = 210109998923969 is a prime.

It is not a weakly prime, because it can be changed into another prime (210110001021131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055000510560 + 105055000510561.

It is an arithmetic number, because the mean of its divisors is an integer number (105055000510561).

Almost surely, 2^{210110001021121} is an apocalyptic number.

It is an amenable number.

210110001021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210110001021121 is an equidigital number, since it uses as much as digits as its factorization.

210110001021121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210110001021121 its reverse (121120100011012), we get a palindrome (331230101032133).

The spelling of 210110001021121 in words is "two hundred ten trillion, one hundred ten billion, one million, twenty-one thousand, one hundred twenty-one".