1122001112021 has 24 divisors (see below), whose sum is σ = 1235665234944. Its totient is φ = 1017831441920.

The previous prime is 1122001112017. The next prime is 1122001112027. The reversal of 1122001112021 is 1202111002211.

It is not a de Polignac number, because 1122001112021 - 2² = 1122001112017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1122001111987 and 1122001112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122001112027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413036 + ... + 1553898.

It is an arithmetic number, because the mean of its divisors is an integer number (51486051456).

Almost surely, 2^{1122001112021} is an apocalyptic number.

It is an amenable number.

1122001112021 is a deficient number, since it is larger than the sum of its proper divisors (113664122923).

1122001112021 is a wasteful number, since it uses less digits than its factorization.

1122001112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141021 (or 1141004 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1122001112021 its reverse (1202111002211), we get a palindrome (2324112114232).

It can be divided in two parts, 112200 and 1112021, that added together give a palindrome (1224221).

The spelling of 1122001112021 in words is "one trillion, one hundred twenty-two billion, one million, one hundred twelve thousand, twenty-one".