20020220444402 has 4 divisors (see below), whose sum is σ = 30030330666606. Its totient is φ = 10010110222200.

The previous prime is 20020220444377. The next prime is 20020220444429. The reversal of 20020220444402 is 20444402202002.

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., 11917208441161 + 8103012003241 = 3452131^2 + 2846579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005055111099 + ... + 5005055111102.

Almost surely, 2^{20020220444402} is an apocalyptic number.

20020220444402 is a deficient number, since it is larger than the sum of its proper divisors (10010110222204).

20020220444402 is a wasteful number, since it uses less digits than its factorization.

20020220444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010110222203.

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

Adding to 20020220444402 its reverse (20444402202002), we get a palindrome (40464622646404).

The spelling of 20020220444402 in words is "twenty trillion, twenty billion, two hundred twenty million, four hundred forty-four thousand, four hundred two".