211230004420 has 24 divisors (see below), whose sum is σ = 443591933400. Its totient is φ = 84490301952.

The previous prime is 211230004417. The next prime is 211230004421. The reversal of 211230004420 is 24400032112.

211230004420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 58261407876 + 152968596544 = 241374^2 + 391112^2 .

It is a super-2 number, since 2×211230004420² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211230004421) 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, 1519596 + ... + 1652764.

It is an arithmetic number, because the mean of its divisors is an integer number (18482997225).

Almost surely, 2^211230004420 is an apocalyptic number.

211230004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211230004420 is an abundant number, since it is smaller than the sum of its proper divisors (232361928980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211230004420 is a wasteful number, since it uses less digits than its factorization.

211230004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212487 (or 212485 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 211230004420 its reverse (24400032112), we get a palindrome (235630036532).

The spelling of 211230004420 in words is "two hundred eleven billion, two hundred thirty million, four thousand, four hundred twenty".