212408805261311 has 4 divisors (see below), whose sum is σ = 212409652602624. Its totient is φ = 212407957920000.

The previous prime is 212408805261307. The next prime is 212408805261371. The reversal of 212408805261311 is 113162508804212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212408805261311 - 2² = 212408805261307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212408805261371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423294530 + ... + 423796031.

It is an arithmetic number, because the mean of its divisors is an integer number (53102413150656).

Almost surely, 2^{212408805261311} is an apocalyptic number.

212408805261311 is a deficient number, since it is larger than the sum of its proper divisors (847341313).

212408805261311 is an equidigital number, since it uses as much as digits as its factorization.

212408805261311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847341312.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 212408805261311 in words is "two hundred twelve trillion, four hundred eight billion, eight hundred five million, two hundred sixty-one thousand, three hundred eleven".