21002023223330 has 16 divisors (see below), whose sum is σ = 37829552480640. Its totient is φ = 8395051360752.

The previous prime is 21002023223329. The next prime is 21002023223333. The reversal of 21002023223330 is 3332232020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002023223296 and 21002023223305.

It is not an unprimeable number, because it can be changed into a prime (21002023223333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719725754 + ... + 719754933.

It is an arithmetic number, because the mean of its divisors is an integer number (2364347030040).

Almost surely, 2^{21002023223330} is an apocalyptic number.

21002023223330 is a deficient number, since it is larger than the sum of its proper divisors (16827529257310).

21002023223330 is a wasteful number, since it uses less digits than its factorization.

21002023223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439482153.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21002023223330 its reverse (3332232020012), we get a palindrome (24334255243342).

The spelling of 21002023223330 in words is "twenty-one trillion, two billion, twenty-three million, two hundred twenty-three thousand, three hundred thirty".