20402424022202 has 4 divisors (see below), whose sum is σ = 30603636033306. Its totient is φ = 10201212011100.

The previous prime is 20402424022193. The next prime is 20402424022241. The reversal of 20402424022202 is 20222042420402.

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., 19532324972521 + 870099049681 = 4419539^2 + 932791^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100606005549 + ... + 5100606005552.

Almost surely, 2^{20402424022202} is an apocalyptic number.

20402424022202 is a deficient number, since it is larger than the sum of its proper divisors (10201212011104).

20402424022202 is a wasteful number, since it uses less digits than its factorization.

20402424022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201212011103.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20402424022202 its reverse (20222042420402), we get a palindrome (40624466442604).

The spelling of 20402424022202 in words is "twenty trillion, four hundred two billion, four hundred twenty-four million, twenty-two thousand, two hundred two".