102101222221021 has 8 divisors (see below), whose sum is σ = 107536110525504. Its totient is φ = 96749309310720.

The previous prime is 102101222220919. The next prime is 102101222221087. The reversal of 102101222221021 is 120122222101201.

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 102101222221021 - 2¹¹ = 102101222218973 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 102101222221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101222261021) 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, 20743846020 + ... + 20743850941.

It is an arithmetic number, because the mean of its divisors is an integer number (13442013815688).

Almost surely, 2^{102101222221021} is an apocalyptic number.

It is an amenable number.

102101222221021 is a deficient number, since it is larger than the sum of its proper divisors (5434888304483).

102101222221021 is a wasteful number, since it uses less digits than its factorization.

102101222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41487697091.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102101222221021 its reverse (120122222101201), we get a palindrome (222223444322222).

The spelling of 102101222221021 in words is "one hundred two trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".