213122213340401 has 4 divisors (see below), whose sum is σ = 213176762157552. Its totient is φ = 213067664523252.

The previous prime is 213122213340341. The next prime is 213122213340403. The reversal of 213122213340401 is 104043312221312.

It is a happy number.

213122213340401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213122213340401 is a prime.

It is a super-2 number, since 2×213122213340401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213122213340403) 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, 27274402715 + ... + 27274410528.

It is an arithmetic number, because the mean of its divisors is an integer number (53294190539388).

Almost surely, 2^{213122213340401} is an apocalyptic number.

It is an amenable number.

213122213340401 is a deficient number, since it is larger than the sum of its proper divisors (54548817151).

213122213340401 is an equidigital number, since it uses as much as digits as its factorization.

213122213340401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54548817150.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 213122213340401 its reverse (104043312221312), we get a palindrome (317165525561713).

The spelling of 213122213340401 in words is "two hundred thirteen trillion, one hundred twenty-two billion, two hundred thirteen million, three hundred forty thousand, four hundred one".