201221002222 has 4 divisors (see below), whose sum is σ = 301831503336. Its totient is φ = 100610501110.

The previous prime is 201221002219. The next prime is 201221002249. The reversal of 201221002222 is 222200122102.

201221002222 is digitally balanced in base 3, 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.

It is a super-2 number, since 2×201221002222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201221002196 and 201221002205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50305250554 + ... + 50305250557.

It is an arithmetic number, because the mean of its divisors is an integer number (75457875834).

Almost surely, 2^201221002222 is an apocalyptic number.

201221002222 is a deficient number, since it is larger than the sum of its proper divisors (100610501114).

201221002222 is a wasteful number, since it uses less digits than its factorization.

201221002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100610501113.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201221002222 its reverse (222200122102), we get a palindrome (423421124324).

The spelling of 201221002222 in words is "two hundred one billion, two hundred twenty-one million, two thousand, two hundred twenty-two".