2001200001222 has 16 divisors (see below), whose sum is σ = 4002692078592. Its totient is φ = 667017987720.

The previous prime is 2001200001181. The next prime is 2001200001331. The reversal of 2001200001222 is 2221000021002.

It is a junction number, because it is equal to n+sod(n) for n = 2001200001198 and 2001200001207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12080718 + ... + 12245249.

It is an arithmetic number, because the mean of its divisors is an integer number (250168254912).

Almost surely, 2^{2001200001222} is an apocalyptic number.

2001200001222 is an abundant number, since it is smaller than the sum of its proper divisors (2001492077370).

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

2001200001222 is a wasteful number, since it uses less digits than its factorization.

2001200001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24339683.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2001200001222 its reverse (2221000021002), we get a palindrome (4222200022224).

The spelling of 2001200001222 in words is "two trillion, one billion, two hundred million, one thousand, two hundred twenty-two".