20213012 has 12 divisors (see below), whose sum is σ = 35585760. Its totient is φ = 10045656.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20213012 is 21031202.

It is a happy number.

It is a super-2 number, since 2×20213012² = 817131708224288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212984 and 20213002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14462 + ... + 15797.

It is an arithmetic number, because the mean of its divisors is an integer number (2965480).

Almost surely, 2^20213012 is an apocalyptic number.

It is an amenable number.

20213012 is a deficient number, since it is larger than the sum of its proper divisors (15372748).

20213012 is a wasteful number, since it uses less digits than its factorization.

20213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30430 (or 30428 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20213012 is about 4495.8883438093. Note that the first 3 decimals coincide. The cubic root of 20213012 is about 272.4020330723.

Adding to 20213012 its reverse (21031202), we get a palindrome (41244214).

The spelling of 20213012 in words is "twenty million, two hundred thirteen thousand, twelve".