21020012332330 has 16 divisors (see below), whose sum is σ = 41275660580064. Its totient is φ = 7643640848080.

The previous prime is 21020012332243. The next prime is 21020012332351. The reversal of 21020012332330 is 3323321002012.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 95545510492 + ... + 95545510711.

It is an arithmetic number, because the mean of its divisors is an integer number (2579728786254).

Almost surely, 2^{21020012332330} is an apocalyptic number.

21020012332330 is a deficient number, since it is larger than the sum of its proper divisors (20255648247734).

21020012332330 is a wasteful number, since it uses less digits than its factorization.

21020012332330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191091021221.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21020012332330 its reverse (3323321002012), we get a palindrome (24343333334342).

The spelling of 21020012332330 in words is "twenty-one trillion, twenty billion, twelve million, three hundred thirty-two thousand, three hundred thirty".