2122011001221 has 8 divisors (see below), whose sum is σ = 2829722333760. Its totient is φ = 1414486834752.

The previous prime is 2122011001219. The next prime is 2122011001267. The reversal of 2122011001221 is 1221001102212.

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

It is not a de Polignac number, because 2122011001221 - 2¹ = 2122011001219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122011001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122011071221) 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, 46765060 + ... + 46810413.

It is an arithmetic number, because the mean of its divisors is an integer number (353715291720).

Almost surely, 2^{2122011001221} is an apocalyptic number.

It is an amenable number.

2122011001221 is a deficient number, since it is larger than the sum of its proper divisors (707711332539).

2122011001221 is an equidigital number, since it uses as much as digits as its factorization.

2122011001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93583035.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2122011001221 its reverse (1221001102212), we get a palindrome (3343012103433).

The spelling of 2122011001221 in words is "two trillion, one hundred twenty-two billion, eleven million, one thousand, two hundred twenty-one".