101221111020221 has 8 divisors (see below), whose sum is σ = 101842569791424. Its totient is φ = 100599657985440.

The previous prime is 101221111020163. The next prime is 101221111020229. The reversal of 101221111020221 is 122020111122101.

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 101221111020221 - 2³⁰ = 101220037278397 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 101221111020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221111020229) 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, 37140041 + ... + 39772161.

It is an arithmetic number, because the mean of its divisors is an integer number (12730321223928).

Almost surely, 2^{101221111020221} is an apocalyptic number.

It is an amenable number.

101221111020221 is a deficient number, since it is larger than the sum of its proper divisors (621458771203).

101221111020221 is a wasteful number, since it uses less digits than its factorization.

101221111020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868211.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101221111020221 its reverse (122020111122101), we get a palindrome (223241222142322).

The spelling of 101221111020221 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven million, twenty thousand, two hundred twenty-one".