101221302221 has 32 divisors (see below), whose sum is σ = 115289395200. Its totient is φ = 88098425280.

The previous prime is 101221302187. The next prime is 101221302241. The reversal of 101221302221 is 122203122101.

It is a cyclic number.

It is not a de Polignac number, because 101221302221 - 2⁶ = 101221302157 is a prime.

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 101221302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221302241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66988856 + ... + 66990366.

It is an arithmetic number, because the mean of its divisors is an integer number (3602793600).

Almost surely, 2^101221302221 is an apocalyptic number.

It is an amenable number.

101221302221 is a deficient number, since it is larger than the sum of its proper divisors (14068092979).

101221302221 is a wasteful number, since it uses less digits than its factorization.

101221302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 101221302221 its reverse (122203122101), we get a palindrome (223424424322).

The spelling of 101221302221 in words is "one hundred one billion, two hundred twenty-one million, three hundred two thousand, two hundred twenty-one".