22121203203 has 24 divisors (see below), whose sum is σ = 34864770096. Its totient is φ = 13404052800.

The previous prime is 22121203201. The next prime is 22121203211. The reversal of 22121203203 is 30230212122.

22121203203 is a `hidden beast` number, since 221 + 2 + 120 + 320 + 3 = 666.

It is not a de Polignac number, because 22121203203 - 2¹ = 22121203201 is a prime.

It is a super-2 number, since 2×22121203203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121203201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 532501 + ... + 572537.

It is an arithmetic number, because the mean of its divisors is an integer number (1452698754).

Almost surely, 2^22121203203 is an apocalyptic number.

22121203203 is a deficient number, since it is larger than the sum of its proper divisors (12743566893).

22121203203 is a wasteful number, since it uses less digits than its factorization.

22121203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45635 (or 45632 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22121203203 its reverse (30230212122), we get a palindrome (52351415325).

The spelling of 22121203203 in words is "twenty-two billion, one hundred twenty-one million, two hundred three thousand, two hundred three".