2001222101222 has 8 divisors (see below), whose sum is σ = 3001839159216. Its totient is φ = 1000609048152.

The previous prime is 2001222101213. The next prime is 2001222101231. The reversal of 2001222101222 is 2221012221002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2001222101213) and next prime (2001222101231).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2001222101222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394303 + ... + 2438549.

It is an arithmetic number, because the mean of its divisors is an integer number (375229894902).

Almost surely, 2^{2001222101222} is an apocalyptic number.

2001222101222 is a deficient number, since it is larger than the sum of its proper divisors (1000617057994).

2001222101222 is a wasteful number, since it uses less digits than its factorization.

2001222101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002462.

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

Adding to 2001222101222 its reverse (2221012221002), we get a palindrome (4222234322224).

The spelling of 2001222101222 in words is "two trillion, one billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-two".