101321222221 has 4 divisors (see below), whose sum is σ = 104815057500. Its totient is φ = 97827386944.

The previous prime is 101321222201. The next prime is 101321222227. The reversal of 101321222221 is 122222123101.

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 18958536100 + 82362686121 = 137690^2 + 286989^2 .

It is a cyclic number.

It is not a de Polignac number, because 101321222221 - 2⁹ = 101321221709 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 (101321222227) 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, 1746917596 + ... + 1746917653.

It is an arithmetic number, because the mean of its divisors is an integer number (26203764375).

Almost surely, 2^101321222221 is an apocalyptic number.

It is an amenable number.

101321222221 is a deficient number, since it is larger than the sum of its proper divisors (3493835279).

101321222221 is an equidigital number, since it uses as much as digits as its factorization.

101321222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493835278.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 101321222221 its reverse (122222123101), we get a palindrome (223543345322).

The spelling of 101321222221 in words is "one hundred one billion, three hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".