211100211020 has 12 divisors (see below), whose sum is σ = 443310443184. Its totient is φ = 84440084400.

The previous prime is 211100211011. The next prime is 211100211029. The reversal of 211100211020 is 20112001112.

It is an interprime number because it is at equal distance from previous prime (211100211011) and next prime (211100211029).

It is a junction number, because it is equal to n+sod(n) for n = 211100210992 and 211100211010.

It is not an unprimeable number, because it can be changed into a prime (211100211029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5277505256 + ... + 5277505295.

It is an arithmetic number, because the mean of its divisors is an integer number (36942536932).

Almost surely, 2^211100211020 is an apocalyptic number.

211100211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100211020 is an abundant number, since it is smaller than the sum of its proper divisors (232210232164).

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

211100211020 is a wasteful number, since it uses less digits than its factorization.

211100211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555010560 (or 10555010558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211100211020 its reverse (20112001112), we get a palindrome (231212212132).

The spelling of 211100211020 in words is "two hundred eleven billion, one hundred million, two hundred eleven thousand, twenty".