20021212101022 has 16 divisors (see below), whose sum is σ = 32774628063744. Its totient is φ = 9097038559000.

The previous prime is 20021212100971. The next prime is 20021212101101. The reversal of 20021212101022 is 22010121212002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021212100987 and 20021212101005.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 175561504 + ... + 175675507.

It is an arithmetic number, because the mean of its divisors is an integer number (2048414253984).

Almost surely, 2^{20021212101022} is an apocalyptic number.

20021212101022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021212101022 is a deficient number, since it is larger than the sum of its proper divisors (12753415962722).

20021212101022 is a wasteful number, since it uses less digits than its factorization.

20021212101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351239615.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021212101022 its reverse (22010121212002), we get a palindrome (42031333313024).

The spelling of 20021212101022 in words is "twenty trillion, twenty-one billion, two hundred twelve million, one hundred one thousand, twenty-two".