211230232020 has 72 divisors (see below), whose sum is σ = 640795567776. Its totient is φ = 56322447552.

The previous prime is 211230231997. The next prime is 211230232021. The reversal of 211230232020 is 20232032112.

211230232020 is a `hidden beast` number, since 21 + 1 + 2 + 302 + 320 + 20 = 666.

211230232020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211230231984 and 211230232002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230232021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1941999 + ... + 2047881.

Almost surely, 2^211230232020 is an apocalyptic number.

211230232020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211230232020 is an abundant number, since it is smaller than the sum of its proper divisors (429565335756).

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

211230232020 is a wasteful number, since it uses less digits than its factorization.

211230232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116981 (or 116976 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 211230232020 its reverse (20232032112), we get a palindrome (231462264132).

The spelling of 211230232020 in words is "two hundred eleven billion, two hundred thirty million, two hundred thirty-two thousand, twenty".