20012212 has 12 divisors (see below), whose sum is σ = 38205216. Its totient is φ = 9096440.

The previous prime is 20012207. The next prime is 20012219. The reversal of 20012212 is 21221002.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 227368 + ... + 227455.

It is an arithmetic number, because the mean of its divisors is an integer number (3183768).

Almost surely, 2^20012212 is an apocalyptic number.

20012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20012212 is a deficient number, since it is larger than the sum of its proper divisors (18193004).

20012212 is a wasteful number, since it uses less digits than its factorization.

20012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454838 (or 454836 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20012212 is about 4473.5010897506. The cubic root of 20012212 is about 271.4969978652.

Adding to 20012212 its reverse (21221002), we get a palindrome (41233214).

The spelling of 20012212 in words is "twenty million, twelve thousand, two hundred twelve".