123421200544211 has 2 divisors, whose sum is σ = 123421200544212. Its totient is φ = 123421200544210.

The previous prime is 123421200544207. The next prime is 123421200544283. The reversal of 123421200544211 is 112445002124321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123421200544211 - 2² = 123421200544207 is a prime.

It is a super-3 number, since 3×123421200544211³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (123421200541211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61710600272105 + 61710600272106.

It is an arithmetic number, because the mean of its divisors is an integer number (61710600272106).

Almost surely, 2^{123421200544211} is an apocalyptic number.

123421200544211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123421200544211 is an equidigital number, since it uses as much as digits as its factorization.

123421200544211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 123421200544211 its reverse (112445002124321), we get a palindrome (235866202668532).

The spelling of 123421200544211 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, two hundred million, five hundred forty-four thousand, two hundred eleven".