20021221120022 has 32 divisors (see below), whose sum is σ = 31203251593920. Its totient is φ = 9627254714880.

The previous prime is 20021221120013. The next prime is 20021221120037. The reversal of 20021221120022 is 22002112212002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9735104 + ... + 11610972.

It is an arithmetic number, because the mean of its divisors is an integer number (975101612310).

Almost surely, 2^{20021221120022} is an apocalyptic number.

20021221120022 is a deficient number, since it is larger than the sum of its proper divisors (11182030473898).

20021221120022 is a wasteful number, since it uses less digits than its factorization.

20021221120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877768.

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

Adding to 20021221120022 its reverse (22002112212002), we get a palindrome (42023333332024).

The spelling of 20021221120022 in words is "twenty trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, twenty-two".