20224400402 has 4 divisors (see below), whose sum is σ = 30336600606. Its totient is φ = 10112200200.

The previous prime is 20224400389. The next prime is 20224400423. The reversal of 20224400402 is 20400442202.

20224400402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18739145881 + 1485254521 = 136891^2 + 38539^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056100099 + ... + 5056100102.

Almost surely, 2^20224400402 is an apocalyptic number.

20224400402 is a deficient number, since it is larger than the sum of its proper divisors (10112200204).

20224400402 is a wasteful number, since it uses less digits than its factorization.

20224400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112200203.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20224400402 its reverse (20400442202), we get a palindrome (40624842604).

The spelling of 20224400402 in words is "twenty billion, two hundred twenty-four million, four hundred thousand, four hundred two".