140212141421 has 4 divisors (see below), whose sum is σ = 152958699744. Its totient is φ = 127465583100.

The previous prime is 140212141373. The next prime is 140212141451. The reversal of 140212141421 is 124141212041.

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 140212141421 - 2¹⁸ = 140211879277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140212141451) 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, 6373279145 + ... + 6373279166.

It is an arithmetic number, because the mean of its divisors is an integer number (38239674936).

Almost surely, 2^140212141421 is an apocalyptic number.

140212141421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140212141421 is a deficient number, since it is larger than the sum of its proper divisors (12746558323).

140212141421 is a wasteful number, since it uses less digits than its factorization.

140212141421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12746558322.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 140212141421 its reverse (124141212041), we get a palindrome (264353353462).

The spelling of 140212141421 in words is "one hundred forty billion, two hundred twelve million, one hundred forty-one thousand, four hundred twenty-one".