211143400104 has 64 divisors (see below), whose sum is σ = 649672007040. Its totient is φ = 55686170880.

The previous prime is 211143400057. The next prime is 211143400109. The reversal of 211143400104 is 401004341112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211143400109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48336507 + ... + 48340874.

It is an arithmetic number, because the mean of its divisors is an integer number (10151125110).

Almost surely, 2^211143400104 is an apocalyptic number.

211143400104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211143400104 is an abundant number, since it is smaller than the sum of its proper divisors (438528606936).

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

211143400104 is a wasteful number, since it uses less digits than its factorization.

211143400104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96677410 (or 96677406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211143400104 its reverse (401004341112), we get a palindrome (612147741216).

The spelling of 211143400104 in words is "two hundred eleven billion, one hundred forty-three million, four hundred thousand, one hundred four".