2421216402 has 32 divisors (see below), whose sum is σ = 5284491840. Its totient is φ = 733446720.

The previous prime is 2421216401. The next prime is 2421216451. The reversal of 2421216402 is 2046121242.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2421216401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284424 + ... + 292812.

It is an arithmetic number, because the mean of its divisors is an integer number (165140370).

Almost surely, 2^2421216402 is an apocalyptic number.

2421216402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2421216402 is an abundant number, since it is smaller than the sum of its proper divisors (2863275438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421216402 is a wasteful number, since it uses less digits than its factorization.

2421216402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2421216402 is about 49205.8573952329. The cubic root of 2421216402 is about 1342.7995975933.

Adding to 2421216402 its reverse (2046121242), we get a palindrome (4467337644).

The spelling of 2421216402 in words is "two billion, four hundred twenty-one million, two hundred sixteen thousand, four hundred two".