21041311041030 has 128 divisors (see below), whose sum is σ = 59288324502528. Its totient is φ = 4678257987072.

The previous prime is 21041311040969. The next prime is 21041311041133. The reversal of 21041311041030 is 3014011314012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21041311040988 and 21041311041006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30136564 + ... + 30826856.

It is an arithmetic number, because the mean of its divisors is an integer number (463190035176).

Almost surely, 2^{21041311041030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21041311041030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29644162251264).

21041311041030 is an abundant number, since it is smaller than the sum of its proper divisors (38247013461498).

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

21041311041030 is a wasteful number, since it uses less digits than its factorization.

21041311041030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694270.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21041311041030 its reverse (3014011314012), we get a palindrome (24055322355042).

The spelling of 21041311041030 in words is "twenty-one trillion, forty-one billion, three hundred eleven million, forty-one thousand, thirty".