20021021221022 has 8 divisors (see below), whose sum is σ = 30268000586496. Its totient is φ = 9931687692192.

The previous prime is 20021021221001. The next prime is 20021021221031. The reversal of 20021021221022 is 22012212012002.

It is a happy number.

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

It is a super-3 number, since 3×20021021221022³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39411458843 + ... + 39411459350.

It is an arithmetic number, because the mean of its divisors is an integer number (3783500073312).

Almost surely, 2^{20021021221022} is an apocalyptic number.

20021021221022 is a deficient number, since it is larger than the sum of its proper divisors (10246979365474).

20021021221022 is a wasteful number, since it uses less digits than its factorization.

20021021221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78822918322.

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

Adding to 20021021221022 its reverse (22012212012002), we get a palindrome (42033233233024).

The spelling of 20021021221022 in words is "twenty trillion, twenty-one billion, twenty-one million, two hundred twenty-one thousand, twenty-two".