141963221 has 4 divisors (see below), whose sum is σ = 141991200. Its totient is φ = 141935244.

The previous prime is 141963181. The next prime is 141963251. The reversal of 141963221 is 122369141.

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 a de Polignac number, because none of the positive numbers 2^k-141963221 is a prime.

It is a super-2 number, since 2×141963221² = 40307112233389682, which 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 (141963251) 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, 4001 + ... + 17318.

It is an arithmetic number, because the mean of its divisors is an integer number (35497800).

Almost surely, 2^141963221 is an apocalyptic number.

It is an amenable number.

141963221 is a deficient number, since it is larger than the sum of its proper divisors (27979).

141963221 is an equidigital number, since it uses as much as digits as its factorization.

141963221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27978.

The product of its digits is 2592, while the sum is 29.

The square root of 141963221 is about 11914.8319753155. The cubic root of 141963221 is about 521.6652985205.

The spelling of 141963221 in words is "one hundred forty-one million, nine hundred sixty-three thousand, two hundred twenty-one".