20152212 has 12 divisors (see below), whose sum is σ = 47021856. Its totient is φ = 6717400.

The previous prime is 20152211. The next prime is 20152213. The reversal of 20152212 is 21225102.

It is an interprime number because it is at equal distance from previous prime (20152211) and next prime (20152213).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20152212² = 812223296985888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152191 and 20152200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152211) 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, 839664 + ... + 839687.

It is an arithmetic number, because the mean of its divisors is an integer number (3918488).

Almost surely, 2^20152212 is an apocalyptic number.

It is an amenable number.

20152212 is an abundant number, since it is smaller than the sum of its proper divisors (26869644).

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

20152212 is a wasteful number, since it uses less digits than its factorization.

20152212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679358 (or 1679356 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20152212 is about 4489.1215176246. The cubic root of 20152212 is about 272.1286336498.

Adding to 20152212 its reverse (21225102), we get a palindrome (41377314).

The spelling of 20152212 in words is "twenty million, one hundred fifty-two thousand, two hundred twelve".