2201211012221 has 8 divisors (see below), whose sum is σ = 2371778033184. Its totient is φ = 2030821576560.

The previous prime is 2201211012193. The next prime is 2201211012251. The reversal of 2201211012221 is 1222101121022.

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-2201211012221 is a prime.

It is a super-2 number, since 2×2201211012221² (a number of 25 digits) contains 22 as substring.

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 2201211012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201211012251) 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, 44370575 + ... + 44420156.

It is an arithmetic number, because the mean of its divisors is an integer number (296472254148).

Almost surely, 2^{2201211012221} is an apocalyptic number.

It is an amenable number.

2201211012221 is a deficient number, since it is larger than the sum of its proper divisors (170567020963).

2201211012221 is a wasteful number, since it uses less digits than its factorization.

2201211012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88792651.

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

Adding to 2201211012221 its reverse (1222101121022), we get a palindrome (3423312133243).

The spelling of 2201211012221 in words is "two trillion, two hundred one billion, two hundred eleven million, twelve thousand, two hundred twenty-one".