1200421211342 has 16 divisors (see below), whose sum is σ = 1859586698112. Its totient is φ = 580577103360.

The previous prime is 1200421211287. The next prime is 1200421211347. The reversal of 1200421211342 is 2431121240021.

It is a super-2 number, since 2×1200421211342² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200421211347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4397603 + ... + 4662590.

It is an arithmetic number, because the mean of its divisors is an integer number (116224168632).

Almost surely, 2^{1200421211342} is an apocalyptic number.

1200421211342 is a deficient number, since it is larger than the sum of its proper divisors (659165486770).

1200421211342 is a wasteful number, since it uses less digits than its factorization.

1200421211342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9062363.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1200421211342 its reverse (2431121240021), we get a palindrome (3631542451363).

The spelling of 1200421211342 in words is "one trillion, two hundred billion, four hundred twenty-one million, two hundred eleven thousand, three hundred forty-two".