20122122221010 has 24 divisors (see below), whose sum is σ = 52317517774860. Its totient is φ = 5365899258912.

The previous prime is 20122122220999. The next prime is 20122122221057. The reversal of 20122122221010 is 1012222122102.

It is a happy number.

20122122221010 is a `hidden beast` number, since 2 + 0 + 1 + 221 + 222 + 210 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16412634665001 + 3709487556009 = 4051251^2 + 1926003^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111789567805 + ... + 111789567984.

Almost surely, 2^{20122122221010} is an apocalyptic number.

20122122221010 is an abundant number, since it is smaller than the sum of its proper divisors (32195395553850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122122221010 is a wasteful number, since it uses less digits than its factorization.

20122122221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223579135802 (or 223579135799 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20122122221010 its reverse (1012222122102), we get a palindrome (21134344343112).

The spelling of 20122122221010 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, ten".