1200012222021 has 8 divisors (see below), whose sum is σ = 1639041083904. Its totient is φ = 780495754080.

The previous prime is 1200012222001. The next prime is 1200012222047. The reversal of 1200012222021 is 1202222100021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200012222021 - 2⁹ = 1200012221509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200012222001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878098341 + ... + 4878098586.

It is an arithmetic number, because the mean of its divisors is an integer number (204880135488).

Almost surely, 2^{1200012222021} is an apocalyptic number.

It is an amenable number.

1200012222021 is a deficient number, since it is larger than the sum of its proper divisors (439028861883).

1200012222021 is an equidigital number, since it uses as much as digits as its factorization.

1200012222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756196971.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200012222021 its reverse (1202222100021), we get a palindrome (2402234322042).

The spelling of 1200012222021 in words is "one trillion, two hundred billion, twelve million, two hundred twenty-two thousand, twenty-one".