21213612511411 has 8 divisors (see below), whose sum is σ = 22176860219424. Its totient is φ = 20253774530880.

The previous prime is 21213612511397. The next prime is 21213612511423. The reversal of 21213612511411 is 11411521631212.

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

It is a cyclic number.

It is not a de Polignac number, because 21213612511411 - 2⁷ = 21213612511283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21213612511451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 852419146 + ... + 852444031.

It is an arithmetic number, because the mean of its divisors is an integer number (2772107527428).

Almost surely, 2^{21213612511411} is an apocalyptic number.

21213612511411 is a deficient number, since it is larger than the sum of its proper divisors (963247708013).

21213612511411 is a wasteful number, since it uses less digits than its factorization.

21213612511411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704863741.

The product of its digits is 2880, while the sum is 31.

The spelling of 21213612511411 in words is "twenty-one trillion, two hundred thirteen billion, six hundred twelve million, five hundred eleven thousand, four hundred eleven".