221222201200002 has 24 divisors (see below), whose sum is σ = 479459010975984. Its totient is φ = 73718542701144.

The previous prime is 221222201199977. The next prime is 221222201200073. The reversal of 221222201200002 is 200002102222122.

221222201200002 is a `hidden beast` number, since 221 + 22 + 220 + 1 + 200 + 0 + 0 + 2 = 666.

It is a super-4 number, since 4×221222201200002⁴ (a number of 58 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1849191208 + ... + 1849310835.

It is an arithmetic number, because the mean of its divisors is an integer number (19977458790666).

Almost surely, 2^{221222201200002} is an apocalyptic number.

221222201200002 is an abundant number, since it is smaller than the sum of its proper divisors (258236809775982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221222201200002 is a wasteful number, since it uses less digits than its factorization.

221222201200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698505374 (or 3698505371 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221222201200002 its reverse (200002102222122), we get a palindrome (421224303422124).

The spelling of 221222201200002 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two hundred one million, two hundred thousand, two".