211420203444 has 36 divisors (see below), whose sum is σ = 534693519360. Its totient is φ = 70437766800.

The previous prime is 211420203437. The next prime is 211420203493. The reversal of 211420203444 is 444302024112.

211420203444 is a `hidden beast` number, since 2 + 1 + 14 + 2 + 0 + 203 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×211420203444² (a number of 23 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 11 ways as a sum of consecutive naturals, for example, 1412532 + ... + 1555019.

It is an arithmetic number, because the mean of its divisors is an integer number (14852597760).

Almost surely, 2^211420203444 is an apocalyptic number.

It is an amenable number.

211420203444 is an abundant number, since it is smaller than the sum of its proper divisors (323273315916).

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

211420203444 is a wasteful number, since it uses less digits than its factorization.

211420203444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969540 (or 2969535 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 211420203444 its reverse (444302024112), we get a palindrome (655722227556).

The spelling of 211420203444 in words is "two hundred eleven billion, four hundred twenty million, two hundred three thousand, four hundred forty-four".