101201220221 has 16 divisors (see below), whose sum is σ = 109899763200. Its totient is φ = 92956785600.

The previous prime is 101201220203. The next prime is 101201220251. The reversal of 101201220221 is 122022102101.

It is not a de Polignac number, because 101201220221 - 2⁶ = 101201220157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101201220196 and 101201220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201220251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900950 + ... + 1007031.

It is an arithmetic number, because the mean of its divisors is an integer number (6868735200).

Almost surely, 2^101201220221 is an apocalyptic number.

It is an amenable number.

101201220221 is a deficient number, since it is larger than the sum of its proper divisors (8698542979).

101201220221 is a wasteful number, since it uses less digits than its factorization.

101201220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908100.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101201220221 its reverse (122022102101), we get a palindrome (223223322322).

The spelling of 101201220221 in words is "one hundred one billion, two hundred one million, two hundred twenty thousand, two hundred twenty-one".