1200003132021 has 16 divisors (see below), whose sum is σ = 1600792065600. Its totient is φ = 799608257280.

The previous prime is 1200003132019. The next prime is 1200003132049. The reversal of 1200003132021 is 1202313000021.

It is not a de Polignac number, because 1200003132021 - 2¹ = 1200003132019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200003132011) 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, 61715661 + ... + 61735101.

It is an arithmetic number, because the mean of its divisors is an integer number (100049504100).

Almost surely, 2^{1200003132021} is an apocalyptic number.

It is an amenable number.

1200003132021 is a deficient number, since it is larger than the sum of its proper divisors (400788933579).

1200003132021 is a wasteful number, since it uses less digits than its factorization.

1200003132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28516.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1200003132021 its reverse (1202313000021), we get a palindrome (2402316132042).

The spelling of 1200003132021 in words is "one trillion, two hundred billion, three million, one hundred thirty-two thousand, twenty-one".