1241421221 has 8 divisors (see below), whose sum is σ = 1307143200. Its totient is φ = 1175737680.

The previous prime is 1241421163. The next prime is 1241421239. The reversal of 1241421221 is 1221241421.

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 1241421221 - 2⁶ = 1241421157 is a prime.

It is a super-2 number, since 2×1241421221² = 3082253295898261682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241421193 and 1241421202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241421421) 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, 76610 + ... + 91388.

It is an arithmetic number, because the mean of its divisors is an integer number (163392900).

Almost surely, 2^1241421221 is an apocalyptic number.

It is an amenable number.

1241421221 is a deficient number, since it is larger than the sum of its proper divisors (65721979).

1241421221 is a wasteful number, since it uses less digits than its factorization.

1241421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19219.

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

The square root of 1241421221 is about 35233.8079264788. The cubic root of 1241421221 is about 1074.7473633112.

Adding to 1241421221 its reverse (1221241421), we get a palindrome (2462662642).

The spelling of 1241421221 in words is "one billion, two hundred forty-one million, four hundred twenty-one thousand, two hundred twenty-one".