20012210 has 32 divisors (see below), whose sum is σ = 37091520. Its totient is φ = 7771072.

The previous prime is 20012207. The next prime is 20012219. The reversal of 20012210 is 1221002.

20012210 = 76² + 77² + ... + 392².

20012210 is a modest number, since divided by 12210 gives 20 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20012219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62972 + ... + 63288.

It is an arithmetic number, because the mean of its divisors is an integer number (1159110).

Almost surely, 2^20012210 is an apocalyptic number.

20012210 is a deficient number, since it is larger than the sum of its proper divisors (17079310).

20012210 is a wasteful number, since it uses less digits than its factorization.

20012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

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

The square root of 20012210 is about 4473.5008662121. The cubic root of 20012210 is about 271.4969888208.

Adding to 20012210 its reverse (1221002), we get a palindrome (21233212).

The spelling of 20012210 in words is "twenty million, twelve thousand, two hundred ten".