1421133331 has 4 divisors (see below), whose sum is σ = 1421240464. Its totient is φ = 1421026200.

The previous prime is 1421133293. The next prime is 1421133347. The reversal of 1421133331 is 1333311241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1333311241 = 17 ⋅78430073.

It is a cyclic number.

It is not a de Polignac number, because 1421133331 - 2²⁷ = 1286915603 is a prime.

It is a super-2 number, since 2×1421133331² = 4039239888958311122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421133391) 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, 30300 + ... + 61321.

It is an arithmetic number, because the mean of its divisors is an integer number (355310116).

Almost surely, 2^1421133331 is an apocalyptic number.

1421133331 is a deficient number, since it is larger than the sum of its proper divisors (107133).

1421133331 is an equidigital number, since it uses as much as digits as its factorization.

1421133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107132.

The product of its digits is 648, while the sum is 22.

The square root of 1421133331 is about 37697.9221045405. The cubic root of 1421133331 is about 1124.2898117843.

Adding to 1421133331 its reverse (1333311241), we get a palindrome (2754444572).

The spelling of 1421133331 in words is "one billion, four hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".