101221021020221 has 8 divisors (see below), whose sum is σ = 107525951834400. Its totient is φ = 95013841071600.

The previous prime is 101221021020199. The next prime is 101221021020239. The reversal of 101221021020221 is 122020120122101.

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 101221021020221 - 2³⁰ = 101219947278397 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 101221021020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221021026221) 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, 24437714255 + ... + 24437718396.

It is an arithmetic number, because the mean of its divisors is an integer number (13440743979300).

Almost surely, 2^{101221021020221} is an apocalyptic number.

It is an amenable number.

101221021020221 is a deficient number, since it is larger than the sum of its proper divisors (6304930814179).

101221021020221 is a wasteful number, since it uses less digits than its factorization.

101221021020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48875432779.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101221021020221 its reverse (122020120122101), we get a palindrome (223241141142322).

The spelling of 101221021020221 in words is "one hundred one trillion, two hundred twenty-one billion, twenty-one million, twenty thousand, two hundred twenty-one".