12220021212101 has 8 divisors (see below), whose sum is σ = 12227360188824. Its totient is φ = 12212682658560.

The previous prime is 12220021212083. The next prime is 12220021212109. The reversal of 12220021212101 is 10121212002221.

It can be written as a sum of positive squares in 4 ways, for example, as 15444027076 + 12204577185025 = 124274^2 + 3493505^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220021212101 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 12220021212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220021212109) 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, 72456665 + ... + 72625121.

It is an arithmetic number, because the mean of its divisors is an integer number (1528420023603).

Almost surely, 2^{12220021212101} is an apocalyptic number.

It is an amenable number.

12220021212101 is a deficient number, since it is larger than the sum of its proper divisors (7338976723).

12220021212101 is a wasteful number, since it uses less digits than its factorization.

12220021212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211591.

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

Adding to 12220021212101 its reverse (10121212002221), we get a palindrome (22341233214322).

The spelling of 12220021212101 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred twelve thousand, one hundred one".