2200121012221 has 4 divisors (see below), whose sum is σ = 2400132013344. Its totient is φ = 2000110011100.

The previous prime is 2200121012161. The next prime is 2200121012239. The reversal of 2200121012221 is 1222101210022.

It is a happy number.

2200121012221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2200121012221 - 2³⁵ = 2165761273853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200121012195 and 2200121012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200121012321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100005500545 + ... + 100005500566.

It is an arithmetic number, because the mean of its divisors is an integer number (600033003336).

Almost surely, 2^{2200121012221} is an apocalyptic number.

It is an amenable number.

2200121012221 is a deficient number, since it is larger than the sum of its proper divisors (200011001123).

2200121012221 is a wasteful number, since it uses less digits than its factorization.

2200121012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200011001122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2200121012221 its reverse (1222101210022), we get a palindrome (3422222222243).

The spelling of 2200121012221 in words is "two trillion, two hundred billion, one hundred twenty-one million, twelve thousand, two hundred twenty-one".