21124221011030 has 32 divisors (see below), whose sum is σ = 39135972839040. Its totient is φ = 8203484718720.

The previous prime is 21124221011029. The next prime is 21124221011071. The reversal of 21124221011030 is 3011012242112.

It is a junction number, because it is equal to n+sod(n) for n = 21124221010993 and 21124221011011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61751870 + ... + 62093009.

It is an arithmetic number, because the mean of its divisors is an integer number (1222999151220).

Almost surely, 2^{21124221011030} is an apocalyptic number.

21124221011030 is a deficient number, since it is larger than the sum of its proper divisors (18011751828010).

21124221011030 is a wasteful number, since it uses less digits than its factorization.

21124221011030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123845384.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21124221011030 its reverse (3011012242112), we get a palindrome (24135233253142).

The spelling of 21124221011030 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred twenty-one million, eleven thousand, thirty".