20012222120210 has 16 divisors (see below), whose sum is σ = 36022059447192. Its totient is φ = 8004875596800.

The previous prime is 20012222120203. The next prime is 20012222120239. The reversal of 20012222120210 is 1202122221002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19967912291209 + 44309829001 = 4468547^2 + 210499^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6688370 + ... + 9206450.

Almost surely, 2^{20012222120210} is an apocalyptic number.

20012222120210 is a deficient number, since it is larger than the sum of its proper divisors (16009837326982).

20012222120210 is a wasteful number, since it uses less digits than its factorization.

20012222120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312829.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20012222120210 its reverse (1202122221002), we get a palindrome (21214344341212).

The spelling of 20012222120210 in words is "twenty trillion, twelve billion, two hundred twenty-two million, one hundred twenty thousand, two hundred ten".