21126463211 has 8 divisors (see below), whose sum is σ = 24147084000. Its totient is φ = 18106481088.

The previous prime is 21126463207. The next prime is 21126463289. The reversal of 21126463211 is 11236462112.

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 21126463211 - 2² = 21126463207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21126463201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86546 + ... + 223031.

It is an arithmetic number, because the mean of its divisors is an integer number (3018385500).

Almost surely, 2^21126463211 is an apocalyptic number.

21126463211 is a deficient number, since it is larger than the sum of its proper divisors (3020620789).

21126463211 is an equidigital number, since it uses as much as digits as its factorization.

21126463211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319333.

The product of its digits is 3456, while the sum is 29.

The spelling of 21126463211 in words is "twenty-one billion, one hundred twenty-six million, four hundred sixty-three thousand, two hundred eleven".