20012222210 has 8 divisors (see below), whose sum is σ = 36021999996. Its totient is φ = 8004888880.

The previous prime is 20012222189. The next prime is 20012222249. The reversal of 20012222210 is 1222221002.

It can be written as a sum of positive squares in 2 ways, for example, as 18243094489 + 1769127721 = 135067^2 + 42061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000611101 + ... + 1000611120.

Almost surely, 2^20012222210 is an apocalyptic number.

20012222210 is a deficient number, since it is larger than the sum of its proper divisors (16009777786).

20012222210 is a wasteful number, since it uses less digits than its factorization.

20012222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001222228.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20012222210 its reverse (1222221002), we get a palindrome (21234443212).

The spelling of 20012222210 in words is "twenty billion, twelve million, two hundred twenty-two thousand, two hundred ten".