21001001100022 has 32 divisors (see below), whose sum is σ = 32357822395392. Its totient is φ = 10218340589184.

The previous prime is 21001001100019. The next prime is 21001001100031. The reversal of 21001001100022 is 22000110010012.

It is a junction number, because it is equal to n+sod(n) for n = 21001001099981 and 21001001100008.

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, 47340468 + ... + 47782024.

It is an arithmetic number, because the mean of its divisors is an integer number (1011181949856).

Almost surely, 2^{21001001100022} is an apocalyptic number.

21001001100022 is a deficient number, since it is larger than the sum of its proper divisors (11356821295370).

21001001100022 is a wasteful number, since it uses less digits than its factorization.

21001001100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445272.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21001001100022 its reverse (22000110010012), we get a palindrome (43001111110034).

The spelling of 21001001100022 in words is "twenty-one trillion, one billion, one million, one hundred thousand, twenty-two".