22121202020011 has 4 divisors (see below), whose sum is σ = 22121237946672. Its totient is φ = 22121166093352.

The previous prime is 22121202019991. The next prime is 22121202020059. The reversal of 22121202020011 is 11002020212122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121202020011 - 2¹³ = 22121202011819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121202020711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17023336 + ... + 18276661.

It is an arithmetic number, because the mean of its divisors is an integer number (5530309486668).

Almost surely, 2^{22121202020011} is an apocalyptic number.

22121202020011 is a deficient number, since it is larger than the sum of its proper divisors (35926661).

22121202020011 is an equidigital number, since it uses as much as digits as its factorization.

22121202020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35926660.

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

Adding to 22121202020011 its reverse (11002020212122), we get a palindrome (33123222232133).

The spelling of 22121202020011 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, twenty thousand, eleven".