213223110101 has 4 divisors (see below), whose sum is σ = 218423673804. Its totient is φ = 208022546400.

The previous prime is 213223110077. The next prime is 213223110103. The reversal of 213223110101 is 101011322312.

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 45654868900 + 167568241201 = 213670^2 + 409351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213223110101 is a prime.

It is a super-2 number, since 2×213223110101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213223110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213223110103) 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, 2600281790 + ... + 2600281871.

It is an arithmetic number, because the mean of its divisors is an integer number (54605918451).

Almost surely, 2^213223110101 is an apocalyptic number.

It is an amenable number.

213223110101 is a deficient number, since it is larger than the sum of its proper divisors (5200563703).

213223110101 is an equidigital number, since it uses as much as digits as its factorization.

213223110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200563702.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213223110101 its reverse (101011322312), we get a palindrome (314234432413).

The spelling of 213223110101 in words is "two hundred thirteen billion, two hundred twenty-three million, one hundred ten thousand, one hundred one".