20122212 has 24 divisors (see below), whose sum is σ = 51220512. Its totient is φ = 6097600.

The previous prime is 20122199. The next prime is 20122213. The reversal of 20122212 is 21222102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20122213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76089 + ... + 76352.

It is an arithmetic number, because the mean of its divisors is an integer number (2134188).

Almost surely, 2^20122212 is an apocalyptic number.

20122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20122212 is an abundant number, since it is smaller than the sum of its proper divisors (31098300).

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

20122212 is a wasteful number, since it uses less digits than its factorization.

20122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152459 (or 152457 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20122212 is about 4485.7788621375. The cubic root of 20122212 is about 271.9935299787.

Adding to 20122212 its reverse (21222102), we get a palindrome (41344314).

It can be divided in two parts, 2012 and 2212, that multiplied together give a palindrome (4450544).

The spelling of 20122212 in words is "twenty million, one hundred twenty-two thousand, two hundred twelve".