1421213203 has 4 divisors (see below), whose sum is σ = 1431587160. Its totient is φ = 1410839248.

The previous prime is 1421213191. The next prime is 1421213221. The reversal of 1421213203 is 3023121241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3023121241 = 7 ⋅431874463.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421213203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421213273) 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, 5186773 + ... + 5187046.

It is an arithmetic number, because the mean of its divisors is an integer number (357896790).

Almost surely, 2^1421213203 is an apocalyptic number.

1421213203 is a deficient number, since it is larger than the sum of its proper divisors (10373957).

1421213203 is a wasteful number, since it uses less digits than its factorization.

1421213203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10373956.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1421213203 is about 37698.9814583896. The cubic root of 1421213203 is about 1124.3108742213.

Adding to 1421213203 its reverse (3023121241), we get a palindrome (4444334444).

The spelling of 1421213203 in words is "one billion, four hundred twenty-one million, two hundred thirteen thousand, two hundred three".