100211211 has 12 divisors (see below), whose sum is σ = 149741280.
Its totient is φ = 64503600.
The previous prime is 100211183. The next prime is 100211231. The reversal of 100211211 is 112112001.
It is a happy number.
It is not a de Polignac number, because 100211211 - 25 = 100211179 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 100211193 and 100211202.
It is not an unprimeable number, because it can be changed into a prime (100211231) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191715 + ... + 192236.
It is an arithmetic number, because the mean of its divisors is an integer number (12478440).
Almost surely, 2100211211 is an apocalyptic number.
100211211 is a deficient number, since it is larger than the sum of its proper divisors (49530069).
100211211 is a wasteful number, since it uses less digits than its factorization.
100211211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 383986 (or 383983 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The square root of 100211211 is about 10010.5549796203.
The cubic root of 100211211 is about 464.4854384354.
Adding to 100211211 its reverse (112112001), we get a palindrome (212323212).
The spelling of 100211211 in words is "one hundred million, two hundred eleven thousand, two hundred eleven".