2001212122022 has 8 divisors (see below), whose sum is σ = 3003886980072. Its totient is φ = 999916462000.

The previous prime is 2001212121973. The next prime is 2001212122139. The reversal of 2001212122022 is 2202212121002.

It is a happy number.

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

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, 344795879 + ... + 344801682.

It is an arithmetic number, because the mean of its divisors is an integer number (375485872509).

Almost surely, 2^{2001212122022} is an apocalyptic number.

2001212122022 is a deficient number, since it is larger than the sum of its proper divisors (1002674858050).

2001212122022 is a wasteful number, since it uses less digits than its factorization.

2001212122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689599014.

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

Adding to 2001212122022 its reverse (2202212121002), we get a palindrome (4203424243024).

The spelling of 2001212122022 in words is "two trillion, one billion, two hundred twelve million, one hundred twenty-two thousand, twenty-two".