101220221101 has 8 divisors (see below), whose sum is σ = 107181124344. Its totient is φ = 95260070400.

The previous prime is 101220221057. The next prime is 101220221173. The reversal of 101220221101 is 101122022101.

It can be written as a sum of positive squares in 4 ways, for example, as 86142837001 + 15077384100 = 293501^2 + 122790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101220221101 - 2⁷ = 101220220973 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 (101220221701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101551 + ... + 461251.

It is an arithmetic number, because the mean of its divisors is an integer number (13397640543).

Almost surely, 2^101220221101 is an apocalyptic number.

It is an amenable number.

101220221101 is a deficient number, since it is larger than the sum of its proper divisors (5960903243).

101220221101 is a wasteful number, since it uses less digits than its factorization.

101220221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376271.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101220221101 its reverse (101122022101), we get a palindrome (202342243202).

The spelling of 101220221101 in words is "one hundred one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred one".