2201012202221 has 16 divisors (see below), whose sum is σ = 2689268085504. Its totient is φ = 1758367574784.

The previous prime is 2201012202211. The next prime is 2201012202241. The reversal of 2201012202221 is 1222022101022.

It is a happy number.

It is not a de Polignac number, because 2201012202221 - 2³⁸ = 1926134295277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201012202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201012202211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89773670 + ... + 89798183.

It is an arithmetic number, because the mean of its divisors is an integer number (168079255344).

Almost surely, 2^{2201012202221} is an apocalyptic number.

It is an amenable number.

2201012202221 is a deficient number, since it is larger than the sum of its proper divisors (488255883283).

2201012202221 is a wasteful number, since it uses less digits than its factorization.

2201012202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179571980.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2201012202221 its reverse (1222022101022), we get a palindrome (3423034303243).

The spelling of 2201012202221 in words is "two trillion, two hundred one billion, twelve million, two hundred two thousand, two hundred twenty-one".