21010033122330 has 96 divisors (see below), whose sum is σ = 60679223159040. Its totient is φ = 4636696955520.

The previous prime is 21010033122329. The next prime is 21010033122341. The reversal of 21010033122330 is 3322133001012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21010033122297 and 21010033122306.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246380466 + ... + 246465725.

It is an arithmetic number, because the mean of its divisors is an integer number (632075241240).

Almost surely, 2^{21010033122330} is an apocalyptic number.

21010033122330 is an abundant number, since it is smaller than the sum of its proper divisors (39669190036710).

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

21010033122330 is a wasteful number, since it uses less digits than its factorization.

21010033122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492846244 (or 492846237 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21010033122330 its reverse (3322133001012), we get a palindrome (24332166123342).

The spelling of 21010033122330 in words is "twenty-one trillion, ten billion, thirty-three million, one hundred twenty-two thousand, three hundred thirty".