21211011230 has 16 divisors (see below), whose sum is σ = 38246695344. Its totient is φ = 8469543360.

The previous prime is 21211011203. The next prime is 21211011251. The reversal of 21211011230 is 3211011212.

It is a super-2 number, since 2×21211011230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851647 + ... + 1863066.

It is an arithmetic number, because the mean of its divisors is an integer number (2390418459).

Almost surely, 2^21211011230 is an apocalyptic number.

21211011230 is a deficient number, since it is larger than the sum of its proper divisors (17035684114).

21211011230 is a wasteful number, since it uses less digits than its factorization.

21211011230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715291.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21211011230 its reverse (3211011212), we get a palindrome (24422022442).

The spelling of 21211011230 in words is "twenty-one billion, two hundred eleven million, eleven thousand, two hundred thirty".