2001120212222 has 8 divisors (see below), whose sum is σ = 3071486837496. Its totient is φ = 977291266392.

The previous prime is 2001120212219. The next prime is 2001120212249. The reversal of 2001120212222 is 2222120211002.

It is a happy number.

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 2001120212222.

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, 11634419753 + ... + 11634419924.

It is an arithmetic number, because the mean of its divisors is an integer number (383935854687).

Almost surely, 2^{2001120212222} is an apocalyptic number.

2001120212222 is a deficient number, since it is larger than the sum of its proper divisors (1070366625274).

2001120212222 is a wasteful number, since it uses less digits than its factorization.

2001120212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23268839722.

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

Adding to 2001120212222 its reverse (2222120211002), we get a palindrome (4223240423224).

The spelling of 2001120212222 in words is "two trillion, one billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-two".