123421200541211 has 2 divisors, whose sum is σ = 123421200541212. Its totient is φ = 123421200541210.

The previous prime is 123421200541127. The next prime is 123421200541313. The reversal of 123421200541211 is 112145002124321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123421200541211 is a prime.

It is not a weakly prime, because it can be changed into another prime (123421200544211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61710600270605 + 61710600270606.

It is an arithmetic number, because the mean of its divisors is an integer number (61710600270606).

Almost surely, 2^{123421200541211} is an apocalyptic number.

123421200541211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123421200541211 is an equidigital number, since it uses as much as digits as its factorization.

123421200541211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 123421200541211 its reverse (112145002124321), we get a palindrome (235566202665532).

The spelling of 123421200541211 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, two hundred million, five hundred forty-one thousand, two hundred eleven".