211421322200 has 96 divisors (see below), whose sum is σ = 559556328960. Its totient is φ = 73537833600.

The previous prime is 211421322197. The next prime is 211421322221. The reversal of 211421322200 is 2223124112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038544 + ... + 2139743.

It is an arithmetic number, because the mean of its divisors is an integer number (5828711760).

Almost surely, 2^211421322200 is an apocalyptic number.

211421322200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211421322200 is an abundant number, since it is smaller than the sum of its proper divisors (348135006760).

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

211421322200 is a wasteful number, since it uses less digits than its factorization.

211421322200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178337 (or 4178328 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211421322200 its reverse (2223124112), we get a palindrome (213644446312).

The spelling of 211421322200 in words is "two hundred eleven billion, four hundred twenty-one million, three hundred twenty-two thousand, two hundred".