21011120012022 has 64 divisors (see below), whose sum is σ = 49143476473344. Its totient is φ = 5863426490880.

The previous prime is 21011120012009. The next prime is 21011120012027. The reversal of 21011120012022 is 22021002111012.

It is a junction number, because it is equal to n+sod(n) for n = 21011120011992 and 21011120012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011120012027) 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, 90764128 + ... + 90995324.

It is an arithmetic number, because the mean of its divisors is an integer number (767866819896).

Almost surely, 2^{21011120012022} is an apocalyptic number.

21011120012022 is an abundant number, since it is smaller than the sum of its proper divisors (28132356461322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011120012022 is a wasteful number, since it uses less digits than its factorization.

21011120012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281573.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21011120012022 its reverse (22021002111012), we get a palindrome (43032122123034).

The spelling of 21011120012022 in words is "twenty-one trillion, eleven billion, one hundred twenty million, twelve thousand, twenty-two".