21021213430041 has 16 divisors (see below), whose sum is σ = 32374916941248. Its totient is φ = 11990709977600.

The previous prime is 21021213430027. The next prime is 21021213430043. The reversal of 21021213430041 is 14003431212012.

It is a cyclic number.

It is not a de Polignac number, because 21021213430041 - 2⁶ = 21021213429977 is a prime.

It is a super-2 number, since 2×21021213430041² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21021213429993 and 21021213430020.

It is not an unprimeable number, because it can be changed into a prime (21021213430043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18735483780 + ... + 18735484901.

It is an arithmetic number, because the mean of its divisors is an integer number (2023432308828).

Almost surely, 2^{21021213430041} is an apocalyptic number.

It is an amenable number.

21021213430041 is a deficient number, since it is larger than the sum of its proper divisors (11353703511207).

21021213430041 is a wasteful number, since it uses less digits than its factorization.

21021213430041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37470968712.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21021213430041 its reverse (14003431212012), we get a palindrome (35024644642053).

The spelling of 21021213430041 in words is "twenty-one trillion, twenty-one billion, two hundred thirteen million, four hundred thirty thousand, forty-one".