21233201022 has 48 divisors (see below), whose sum is σ = 50229374832. Its totient is φ = 6428943360.

The previous prime is 21233201009. The next prime is 21233201023. The reversal of 21233201022 is 22010233212.

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 = 21233200986 and 21233201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233201023) 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, 196908 + ... + 285024.

It is an arithmetic number, because the mean of its divisors is an integer number (1046445309).

Almost surely, 2^21233201022 is an apocalyptic number.

21233201022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21233201022 is an abundant number, since it is smaller than the sum of its proper divisors (28996173810).

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

21233201022 is a wasteful number, since it uses less digits than its factorization.

21233201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89353 (or 89350 counting only the distinct ones).

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

Adding to 21233201022 its reverse (22010233212), we get a palindrome (43243434234).

The spelling of 21233201022 in words is "twenty-one billion, two hundred thirty-three million, two hundred one thousand, twenty-two".