141021313421 has 4 divisors (see below), whose sum is σ = 141092790972. Its totient is φ = 140949835872.

The previous prime is 141021313417. The next prime is 141021313457. The reversal of 141021313421 is 124313120141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19171448521 + 121849864900 = 138461^2 + 349070^2 .

It is a cyclic number.

It is not a de Polignac number, because 141021313421 - 2² = 141021313417 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 (141021313921) 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, 35735816 + ... + 35739761.

It is an arithmetic number, because the mean of its divisors is an integer number (35273197743).

Almost surely, 2^141021313421 is an apocalyptic number.

It is an amenable number.

141021313421 is a deficient number, since it is larger than the sum of its proper divisors (71477551).

141021313421 is an equidigital number, since it uses as much as digits as its factorization.

141021313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71477550.

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

Adding to 141021313421 its reverse (124313120141), we get a palindrome (265334433562).

The spelling of 141021313421 in words is "one hundred forty-one billion, twenty-one million, three hundred thirteen thousand, four hundred twenty-one".