1241142221 has 8 divisors (see below), whose sum is σ = 1358330688. Its totient is φ = 1124680000.

The previous prime is 1241142197. The next prime is 1241142223. The reversal of 1241142221 is 1222411421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1241142221 - 2⁶ = 1241142157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241142193 and 1241142202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241142223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177980 + ... + 184821.

It is an arithmetic number, because the mean of its divisors is an integer number (169791336).

Almost surely, 2^1241142221 is an apocalyptic number.

1241142221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1241142221 is a deficient number, since it is larger than the sum of its proper divisors (117188467).

1241142221 is a wasteful number, since it uses less digits than its factorization.

1241142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363123.

The product of its digits is 256, while the sum is 20.

The square root of 1241142221 is about 35229.8484385045. The cubic root of 1241142221 is about 1074.6668435071. Note that the first 3 decimals are identical.

Adding to 1241142221 its reverse (1222411421), we get a palindrome (2463553642).

The spelling of 1241142221 in words is "one billion, two hundred forty-one million, one hundred forty-two thousand, two hundred twenty-one".