211100421264 has 40 divisors (see below), whose sum is σ = 545901057120. Its totient is φ = 70294768128.

The previous prime is 211100421251. The next prime is 211100421269. The reversal of 211100421264 is 462124001112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (211100421269) 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, 2203834 + ... + 2297625.

It is an arithmetic number, because the mean of its divisors is an integer number (13647526428).

Almost surely, 2^211100421264 is an apocalyptic number.

211100421264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211100421264 is an abundant number, since it is smaller than the sum of its proper divisors (334800635856).

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

211100421264 is a wasteful number, since it uses less digits than its factorization.

211100421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502447 (or 4502441 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 211100421264 its reverse (462124001112), we get a palindrome (673224422376).

The spelling of 211100421264 in words is "two hundred eleven billion, one hundred million, four hundred twenty-one thousand, two hundred sixty-four".