1222203300021 has 24 divisors (see below), whose sum is σ = 1933954289280. Its totient is φ = 737629972800.

The previous prime is 1222203299969. The next prime is 1222203300029. The reversal of 1222203300021 is 1200033022221.

1222203300021 is a `hidden beast` number, since 122 + 220 + 3 + 300 + 0 + 21 = 666.

It is not a de Polignac number, because 1222203300021 - 2⁷ = 1222203299893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222203299967 and 1222203300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222203300029) 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, 25803720 + ... + 25851041.

It is an arithmetic number, because the mean of its divisors is an integer number (80581428720).

Almost surely, 2^{1222203300021} is an apocalyptic number.

1222203300021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222203300021 is a deficient number, since it is larger than the sum of its proper divisors (711750989259).

1222203300021 is a wasteful number, since it uses less digits than its factorization.

1222203300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51655017 (or 51655014 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1222203300021 its reverse (1200033022221), we get a palindrome (2422236322242).

The spelling of 1222203300021 in words is "one trillion, two hundred twenty-two billion, two hundred three million, three hundred thousand, twenty-one".