21051004000411 has 24 divisors (see below), whose sum is σ = 28120079568960. Its totient is φ = 15540043957200.

The previous prime is 21051004000399. The next prime is 21051004000423. The reversal of 21051004000411 is 11400040015012.

It is an interprime number because it is at equal distance from previous prime (21051004000399) and next prime (21051004000423).

It is not a de Polignac number, because 21051004000411 - 2⁷ = 21051004000283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (21051004001411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1027770445 + ... + 1027790926.

It is an arithmetic number, because the mean of its divisors is an integer number (1171669982040).

Almost surely, 2^{21051004000411} is an apocalyptic number.

21051004000411 is a deficient number, since it is larger than the sum of its proper divisors (7069075568549).

21051004000411 is a wasteful number, since it uses less digits than its factorization.

21051004000411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055561415 (or 2055561408 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 21051004000411 its reverse (11400040015012), we get a palindrome (32451044015423).

The spelling of 21051004000411 in words is "twenty-one trillion, fifty-one billion, four million, four hundred eleven", and thus it is an aban number.