21102212321330 has 16 divisors (see below), whose sum is σ = 43410265346880. Its totient is φ = 7235044224432.

The previous prime is 21102212321303. The next prime is 21102212321341. The reversal of 21102212321330 is 3312321220112.

It is a junction number, because it is equal to n+sod(n) for n = 21102212321296 and 21102212321305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150730087940 + ... + 150730088079.

It is an arithmetic number, because the mean of its divisors is an integer number (2713141584180).

Almost surely, 2^{21102212321330} is an apocalyptic number.

21102212321330 is an abundant number, since it is smaller than the sum of its proper divisors (22308053025550).

21102212321330 is a wasteful number, since it uses less digits than its factorization.

21102212321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301460176033.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21102212321330 its reverse (3312321220112), we get a palindrome (24414533541442).

The spelling of 21102212321330 in words is "twenty-one trillion, one hundred two billion, two hundred twelve million, three hundred twenty-one thousand, three hundred thirty".