21120022001223 has 36 divisors (see below), whose sum is σ = 31322553474888. Its totient is φ = 13712009573280.

The previous prime is 21120022001201. The next prime is 21120022001231. The reversal of 21120022001223 is 32210022002112.

21120022001223 is a `hidden beast` number, since 21 + 1 + 200 + 220 + 0 + 1 + 223 = 666.

It is not a de Polignac number, because 21120022001223 - 2²⁶ = 21119954892359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21120022001196 and 21120022001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120022001263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 202033 + ... + 6502373.

It is an arithmetic number, because the mean of its divisors is an integer number (870070929858).

Almost surely, 2^{21120022001223} is an apocalyptic number.

21120022001223 is a deficient number, since it is larger than the sum of its proper divisors (10202531473665).

21120022001223 is a wasteful number, since it uses less digits than its factorization.

21120022001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300572 (or 6300510 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21120022001223 its reverse (32210022002112), we get a palindrome (53330044003335).

The spelling of 21120022001223 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, one thousand, two hundred twenty-three".