21114553211 has 16 divisors (see below), whose sum is σ = 21789471744. Its totient is φ = 20449475904.

The previous prime is 21114553199. The next prime is 21114553253. The reversal of 21114553211 is 11235541112.

It is a de Polignac number, because none of the positive numbers 2^k-21114553211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114543211) 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, 6148751 + ... + 6152183.

It is an arithmetic number, because the mean of its divisors is an integer number (1361841984).

Almost surely, 2^21114553211 is an apocalyptic number.

21114553211 is a deficient number, since it is larger than the sum of its proper divisors (674918533).

21114553211 is a wasteful number, since it uses less digits than its factorization.

21114553211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810.

The product of its digits is 1200, while the sum is 26.

The spelling of 21114553211 in words is "twenty-one billion, one hundred fourteen million, five hundred fifty-three thousand, two hundred eleven".