21011230011222 has 24 divisors (see below), whose sum is σ = 49662907299720. Its totient is φ = 6367039397280.

The previous prime is 21011230011193. The next prime is 21011230011253. The reversal of 21011230011222 is 22211003211012.

21011230011222 is a `hidden beast` number, since 21 + 0 + 112 + 300 + 11 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21011230011195 and 21011230011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53058661447 + ... + 53058661842.

It is an arithmetic number, because the mean of its divisors is an integer number (2069287804155).

Almost surely, 2^{21011230011222} is an apocalyptic number.

21011230011222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011230011222 is an abundant number, since it is smaller than the sum of its proper divisors (28651677288498).

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

21011230011222 is a wasteful number, since it uses less digits than its factorization.

21011230011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106117323308 (or 106117323305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21011230011222 its reverse (22211003211012), we get a palindrome (43222233222234).

The spelling of 21011230011222 in words is "twenty-one trillion, eleven billion, two hundred thirty million, eleven thousand, two hundred twenty-two".