212143400342401 has 16 divisors (see below), whose sum is σ = 245082809904768. Its totient is φ = 181483317472000.

The previous prime is 212143400342387. The next prime is 212143400342407. The reversal of 212143400342401 is 104243004341212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212143400342401 - 2⁷ = 212143400342273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212143400342407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91832125 + ... + 94113898.

It is an arithmetic number, because the mean of its divisors is an integer number (15317675619048).

Almost surely, 2^{212143400342401} is an apocalyptic number.

It is an amenable number.

212143400342401 is a deficient number, since it is larger than the sum of its proper divisors (32939409562367).

212143400342401 is a wasteful number, since it uses less digits than its factorization.

212143400342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185952152.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 212143400342401 its reverse (104243004341212), we get a palindrome (316386404683613).

The spelling of 212143400342401 in words is "two hundred twelve trillion, one hundred forty-three billion, four hundred million, three hundred forty-two thousand, four hundred one".