140012011231421 has 4 divisors (see below), whose sum is σ = 160013727121632. Its totient is φ = 120010295341212.

The previous prime is 140012011231387. The next prime is 140012011231511. The reversal of 140012011231421 is 124132110210041.

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 not a de Polignac number, because 140012011231421 - 2¹⁰ = 140012011230397 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 (140012011231321) 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, 10000857945095 + ... + 10000857945108.

It is an arithmetic number, because the mean of its divisors is an integer number (40003431780408).

Almost surely, 2^{140012011231421} is an apocalyptic number.

It is an amenable number.

140012011231421 is a deficient number, since it is larger than the sum of its proper divisors (20001715890211).

140012011231421 is an equidigital number, since it uses as much as digits as its factorization.

140012011231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001715890210.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 140012011231421 its reverse (124132110210041), we get a palindrome (264144121441462).

The spelling of 140012011231421 in words is "one hundred forty trillion, twelve billion, eleven million, two hundred thirty-one thousand, four hundred twenty-one".