21032210220330 has 64 divisors (see below), whose sum is σ = 53484013376640. Its totient is φ = 5274973046784.

The previous prime is 21032210220311. The next prime is 21032210220389. The reversal of 21032210220330 is 3302201223012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21032210220297 and 21032210220306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13721995 + ... + 15177534.

It is an arithmetic number, because the mean of its divisors is an integer number (835687709010).

Almost surely, 2^{21032210220330} is an apocalyptic number.

21032210220330 is an abundant number, since it is smaller than the sum of its proper divisors (32451803156310).

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

21032210220330 is a wasteful number, since it uses less digits than its factorization.

21032210220330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28900983.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21032210220330 its reverse (3302201223012), we get a palindrome (24334411443342).

The spelling of 21032210220330 in words is "twenty-one trillion, thirty-two billion, two hundred ten million, two hundred twenty thousand, three hundred thirty".