20021222012011 has 32 divisors (see below), whose sum is σ = 23795752107456. Its totient is φ = 16640832000000.

The previous prime is 20021222011969. The next prime is 20021222012017. The reversal of 20021222012011 is 11021022212002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20021222012011 - 2³³ = 20012632077419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021222012017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8999490 + ... + 11001511.

It is an arithmetic number, because the mean of its divisors is an integer number (743617253358).

Almost surely, 2^{20021222012011} is an apocalyptic number.

20021222012011 is a deficient number, since it is larger than the sum of its proper divisors (3774530095445).

20021222012011 is a wasteful number, since it uses less digits than its factorization.

20021222012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001183.

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

Adding to 20021222012011 its reverse (11021022212002), we get a palindrome (31042244224013).

The spelling of 20021222012011 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, twelve thousand, eleven".