1122100220021 has 16 divisors (see below), whose sum is σ = 1281393893376. Its totient is φ = 973280910000.

The previous prime is 1122100220011. The next prime is 1122100220041. The reversal of 1122100220021 is 1200220012211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122100220021 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 = 1122100219978 and 1122100220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122100220011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23149145 + ... + 23197566.

It is an arithmetic number, because the mean of its divisors is an integer number (80087118336).

Almost surely, 2^{1122100220021} is an apocalyptic number.

1122100220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122100220021 is a deficient number, since it is larger than the sum of its proper divisors (159293673355).

1122100220021 is a wasteful number, since it uses less digits than its factorization.

1122100220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46346824.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1122100220021 its reverse (1200220012211), we get a palindrome (2322320232232).

The spelling of 1122100220021 in words is "one trillion, one hundred twenty-two billion, one hundred million, two hundred twenty thousand, twenty-one".