2201021221121 has 8 divisors (see below), whose sum is σ = 2201990404224. Its totient is φ = 2200052190960.

The previous prime is 2201021221111. The next prime is 2201021221169. The reversal of 2201021221121 is 1211221201022.

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 2201021221121 - 2³⁸ = 1926143314177 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 2201021221121.

It is not an unprimeable number, because it can be changed into a prime (2201021221111) 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, 35915576 + ... + 35976806.

It is an arithmetic number, because the mean of its divisors is an integer number (275248800528).

Almost surely, 2^{2201021221121} is an apocalyptic number.

It is an amenable number.

2201021221121 is a deficient number, since it is larger than the sum of its proper divisors (969183103).

2201021221121 is a wasteful number, since it uses less digits than its factorization.

2201021221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76471.

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

Adding to 2201021221121 its reverse (1211221201022), we get a palindrome (3412242422143).

The spelling of 2201021221121 in words is "two trillion, two hundred one billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-one".