2001022101022 has 32 divisors (see below), whose sum is σ = 3676210509312. Its totient is φ = 798124640544.

The previous prime is 2001022101011. The next prime is 2001022101041. The reversal of 2001022101022 is 2201012201002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001022100993 and 2001022101011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83965848 + ... + 83989675.

It is an arithmetic number, because the mean of its divisors is an integer number (114881578416).

Almost surely, 2^{2001022101022} is an apocalyptic number.

2001022101022 is a deficient number, since it is larger than the sum of its proper divisors (1675188408290).

2001022101022 is a wasteful number, since it uses less digits than its factorization.

2001022101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167955592.

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

Adding to 2001022101022 its reverse (2201012201002), we get a palindrome (4202034302024).

The spelling of 2001022101022 in words is "two trillion, one billion, twenty-two million, one hundred one thousand, twenty-two".