1200332220021 has 24 divisors (see below), whose sum is σ = 1903479955104. Its totient is φ = 722840470560.

The previous prime is 1200332220007. The next prime is 1200332220079. The reversal of 1200332220021 is 1200222330021.

1200332220021 is a `hidden beast` number, since 120 + 0 + 3 + 322 + 200 + 21 = 666.

It is not a de Polignac number, because 1200332220021 - 2¹⁰ = 1200332218997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200332219976 and 1200332220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200332222021) 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, 38597731 + ... + 38628816.

It is an arithmetic number, because the mean of its divisors is an integer number (79311664796).

Almost surely, 2^{1200332220021} is an apocalyptic number.

1200332220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200332220021 is a deficient number, since it is larger than the sum of its proper divisors (703147735083).

1200332220021 is a wasteful number, since it uses less digits than its factorization.

1200332220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77226721 (or 77226718 counting only the distinct ones).

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

Adding to 1200332220021 its reverse (1200222330021), we get a palindrome (2400554550042).

The spelling of 1200332220021 in words is "one trillion, two hundred billion, three hundred thirty-two million, two hundred twenty thousand, twenty-one".