212455131401 has 4 divisors (see below), whose sum is σ = 212464506372. Its totient is φ = 212445756432.

The previous prime is 212455131359. The next prime is 212455131461. The reversal of 212455131401 is 104131554212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60885069001 + 151570062400 = 246749^2 + 389320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212455131401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212455131461) 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, 4653410 + ... + 4698843.

It is an arithmetic number, because the mean of its divisors is an integer number (53116126593).

Almost surely, 2^212455131401 is an apocalyptic number.

It is an amenable number.

212455131401 is a deficient number, since it is larger than the sum of its proper divisors (9374971).

212455131401 is an equidigital number, since it uses as much as digits as its factorization.

212455131401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9374970.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 212455131401 its reverse (104131554212), we get a palindrome (316586685613).

The spelling of 212455131401 in words is "two hundred twelve billion, four hundred fifty-five million, one hundred thirty-one thousand, four hundred one".