140012331243221 has 4 divisors (see below), whose sum is σ = 140012364452352. Its totient is φ = 140012298034092.

The previous prime is 140012331243217. The next prime is 140012331243223. The reversal of 140012331243221 is 122342133210041.

It is a happy number.

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 140012331243221 - 2² = 140012331243217 is a prime.

It is a super-2 number, since 2×140012331243221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140012331243223) 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, 9171221 + ... + 19082346.

It is an arithmetic number, because the mean of its divisors is an integer number (35003091113088).

Almost surely, 2^{140012331243221} is an apocalyptic number.

It is an amenable number.

140012331243221 is a deficient number, since it is larger than the sum of its proper divisors (33209131).

140012331243221 is an equidigital number, since it uses as much as digits as its factorization.

140012331243221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33209130.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 140012331243221 its reverse (122342133210041), we get a palindrome (262354464453262).

The spelling of 140012331243221 in words is "one hundred forty trillion, twelve billion, three hundred thirty-one million, two hundred forty-three thousand, two hundred twenty-one".