101220120221 has 8 divisors (see below), whose sum is σ = 112070038944. Its totient is φ = 90644883120.

The previous prime is 101220120191. The next prime is 101220120227. The reversal of 101220120221 is 122021022101.

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

It is not a de Polignac number, because 101220120221 - 2¹⁰ = 101220119197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220120196 and 101220120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220120227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68669630 + ... + 68671103.

It is an arithmetic number, because the mean of its divisors is an integer number (14008754868).

Almost surely, 2^101220120221 is an apocalyptic number.

101220120221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101220120221 is a deficient number, since it is larger than the sum of its proper divisors (10849918723).

101220120221 is a wasteful number, since it uses less digits than its factorization.

101220120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137340811.

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

Adding to 101220120221 its reverse (122021022101), we get a palindrome (223241142322).

The spelling of 101220120221 in words is "one hundred one billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".