210121010111143 has 2 divisors, whose sum is σ = 210121010111144. Its totient is φ = 210121010111142.

The previous prime is 210121010111093. The next prime is 210121010111149. The reversal of 210121010111143 is 341111010121012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210121010111143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210121010111143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210121010111149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060505055571 + 105060505055572.

It is an arithmetic number, because the mean of its divisors is an integer number (105060505055572).

Almost surely, 2^{210121010111143} is an apocalyptic number.

210121010111143 is a deficient number, since it is larger than the sum of its proper divisors (1).

210121010111143 is an equidigital number, since it uses as much as digits as its factorization.

210121010111143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 210121010111143 its reverse (341111010121012), we get a palindrome (551232020232155).

The spelling of 210121010111143 in words is "two hundred ten trillion, one hundred twenty-one billion, ten million, one hundred eleven thousand, one hundred forty-three".