21021031330122 has 8 divisors (see below), whose sum is σ = 42042062660256. Its totient is φ = 7007010443372.

The previous prime is 21021031330073. The next prime is 21021031330139. The reversal of 21021031330122 is 22103313012012.

It is a sphenic number, since it is the product of 3 distinct primes.

21021031330122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751752610838 + ... + 1751752610849.

It is an arithmetic number, because the mean of its divisors is an integer number (5255257832532).

Almost surely, 2^{21021031330122} is an apocalyptic number.

21021031330122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21021031330122 is a wasteful number, since it uses less digits than its factorization.

21021031330122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503505221692.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21021031330122 its reverse (22103313012012), we get a palindrome (43124344342134).

The spelling of 21021031330122 in words is "twenty-one trillion, twenty-one billion, thirty-one million, three hundred thirty thousand, one hundred twenty-two".