1200134024021 has 4 divisors (see below), whose sum is σ = 1202428735872. Its totient is φ = 1197839312172.

The previous prime is 1200134024009. The next prime is 1200134024039. The reversal of 1200134024021 is 1204204310021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200134024021 is a prime.

It is a super-2 number, since 2×1200134024021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200134023984 and 1200134024002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200134024051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147355141 + ... + 1147356186.

It is an arithmetic number, because the mean of its divisors is an integer number (300607183968).

Almost surely, 2^{1200134024021} is an apocalyptic number.

It is an amenable number.

1200134024021 is a deficient number, since it is larger than the sum of its proper divisors (2294711851).

1200134024021 is an equidigital number, since it uses as much as digits as its factorization.

1200134024021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294711850.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1200134024021 its reverse (1204204310021), we get a palindrome (2404338334042).

The spelling of 1200134024021 in words is "one trillion, two hundred billion, one hundred thirty-four million, twenty-four thousand, twenty-one".