21142310211 has 96 divisors (see below), whose sum is σ = 35582976000. Its totient is φ = 11962641600.

The previous prime is 21142310179. The next prime is 21142310237. The reversal of 21142310211 is 11201324112.

21142310211 is a `hidden beast` number, since 2 + 1 + 142 + 310 + 211 = 666.

It is not a de Polignac number, because 21142310211 - 2⁵ = 21142310179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21142310261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58892050 + ... + 58892408.

It is an arithmetic number, because the mean of its divisors is an integer number (370656000).

Almost surely, 2^21142310211 is an apocalyptic number.

21142310211 is a deficient number, since it is larger than the sum of its proper divisors (14440665789).

21142310211 is a wasteful number, since it uses less digits than its factorization.

21142310211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21142310211 its reverse (11201324112), we get a palindrome (32343634323).

It can be divided in two parts, 2114 and 2310211, that added together give a triangular number (2312325 = T₂₁₅₀).

The spelling of 21142310211 in words is "twenty-one billion, one hundred forty-two million, three hundred ten thousand, two hundred eleven".