2001220022 has 8 divisors (see below), whose sum is σ = 3006007200. Its totient is φ = 999217624.

The previous prime is 2001220019. The next prime is 2001220027. The reversal of 2001220022 is 2200221002.

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

It is a junction number, because it is equal to n+sod(n) for n = 2001219985 and 2001220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694397 + ... + 697272.

It is an arithmetic number, because the mean of its divisors is an integer number (375750900).

Almost surely, 2^2001220022 is an apocalyptic number.

2001220022 is a deficient number, since it is larger than the sum of its proper divisors (1004787178).

2001220022 is a wasteful number, since it uses less digits than its factorization.

2001220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392390.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2001220022 is about 44734.9977310830. The cubic root of 2001220022 is about 1260.1771863864.

Adding to 2001220022 its reverse (2200221002), we get a palindrome (4201441024).

The spelling of 2001220022 in words is "two billion, one million, two hundred twenty thousand, twenty-two".