141222421 has 4 divisors (see below), whose sum is σ = 148655200. Its totient is φ = 133789644.

The previous prime is 141222413. The next prime is 141222427. The reversal of 141222421 is 124222141.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124222141 = 43 ⋅2888887.

It is a cyclic number.

It is not a de Polignac number, because 141222421 - 2³ = 141222413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 7432759 = 141222421 / (1 + 4 + 1 + 2 + 2 + 2 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141222427) 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, 3716361 + ... + 3716398.

It is an arithmetic number, because the mean of its divisors is an integer number (37163800).

Almost surely, 2^141222421 is an apocalyptic number.

It is an amenable number.

141222421 is a deficient number, since it is larger than the sum of its proper divisors (7432779).

141222421 is an equidigital number, since it uses as much as digits as its factorization.

141222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432778.

The product of its digits is 256, while the sum is 19.

The square root of 141222421 is about 11883.7040101140. The cubic root of 141222421 is about 520.7563217605.

Adding to 141222421 its reverse (124222141), we get a palindrome (265444562).

The spelling of 141222421 in words is "one hundred forty-one million, two hundred twenty-two thousand, four hundred twenty-one".