211100001240220 has 96 divisors (see below), whose sum is σ = 444824162334720. Its totient is φ = 84152210653440.

The previous prime is 211100001240199. The next prime is 211100001240221. The reversal of 211100001240220 is 22042100001112.

It is a junction number, because it is equal to n+sod(n) for n = 211100001240194 and 211100001240203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100001240221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18746109390 + ... + 18746120650.

It is an arithmetic number, because the mean of its divisors is an integer number (4633585024320).

Almost surely, 2^{211100001240220} is an apocalyptic number.

211100001240220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100001240220 is an abundant number, since it is smaller than the sum of its proper divisors (233724161094500).

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

211100001240220 is a wasteful number, since it uses less digits than its factorization.

211100001240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443 (or 14441 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211100001240220 its reverse (22042100001112), we get a palindrome (233142101241332).

The spelling of 211100001240220 in words is "two hundred eleven trillion, one hundred billion, one million, two hundred forty thousand, two hundred twenty".