1200012361421 has 8 divisors (see below), whose sum is σ = 1236641926464. Its totient is φ = 1163733318880.

The previous prime is 1200012361411. The next prime is 1200012361447. The reversal of 1200012361421 is 1241632100021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200012361421 - 2⁶ = 1200012361357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200012361411) 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, 87623675 + ... + 87637368.

It is an arithmetic number, because the mean of its divisors is an integer number (154580240808).

Almost surely, 2^{1200012361421} is an apocalyptic number.

It is an amenable number.

1200012361421 is a deficient number, since it is larger than the sum of its proper divisors (36629565043).

1200012361421 is a wasteful number, since it uses less digits than its factorization.

1200012361421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175261251.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1200012361421 its reverse (1241632100021), we get a palindrome (2441644461442).

The spelling of 1200012361421 in words is "one trillion, two hundred billion, twelve million, three hundred sixty-one thousand, four hundred twenty-one".