2001021122002 has 64 divisors (see below), whose sum is σ = 3744462458880. Its totient is φ = 782811677376.

The previous prime is 2001021121997. The next prime is 2001021122041. The reversal of 2001021122002 is 2002211201002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26763 + ... + 2000689.

It is an arithmetic number, because the mean of its divisors is an integer number (58507225920).

Almost surely, 2^{2001021122002} is an apocalyptic number.

2001021122002 is a deficient number, since it is larger than the sum of its proper divisors (1743441336878).

2001021122002 is a wasteful number, since it uses less digits than its factorization.

2001021122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974095.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001021122002 its reverse (2002211201002), we get a palindrome (4003232323004).

The spelling of 2001021122002 in words is "two trillion, one billion, twenty-one million, one hundred twenty-two thousand, two".