1100020320021 has 32 divisors (see below), whose sum is σ = 1694818828288. Its totient is φ = 621640656000.

The previous prime is 1100020320013. The next prime is 1100020320031. The reversal of 1100020320021 is 1200230200011.

It is not a de Polignac number, because 1100020320021 - 2³ = 1100020320013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100020319979 and 1100020320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100020320031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175896 + ... + 1493646.

It is an arithmetic number, because the mean of its divisors is an integer number (52963088384).

Almost surely, 2^{1100020320021} is an apocalyptic number.

It is an amenable number.

1100020320021 is a deficient number, since it is larger than the sum of its proper divisors (594798508267).

1100020320021 is a wasteful number, since it uses less digits than its factorization.

1100020320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318201.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1100020320021 its reverse (1200230200011), we get a palindrome (2300250520032).

The spelling of 1100020320021 in words is "one trillion, one hundred billion, twenty million, three hundred twenty thousand, twenty-one".