21110010 has 32 divisors (see below), whose sum is σ = 51172992.
Its totient is φ = 5572800.
The previous prime is 21109987. The next prime is 21110027. The reversal of 21110010 is 1001112.
Adding to 21110010 its reverse (1001112), we get a palindrome (22111122).
It is a Harshad number since it is a multiple of its sum of digits (6).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454 + ... + 6513.
It is an arithmetic number, because the mean of its divisors is an integer number (1599156).
Almost surely, 221110010 is an apocalyptic number.
21110010 is an abundant number, since it is smaller than the sum of its proper divisors (30062982).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21110010 is a wasteful number, since it uses less digits than its factorization.
21110010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7078.
The product of its (nonzero) digits is 2, while the sum is 6.
The square root of 21110010 is about 4594.5630913069.
The cubic root of 21110010 is about 276.3733395441.
The spelling of 21110010 in words is "twenty-one million, one hundred ten thousand, ten".