20331001212 has 24 divisors (see below), whose sum is σ = 47447460816. Its totient is φ = 6775792128.

The previous prime is 20331001189. The next prime is 20331001231. The reversal of 20331001212 is 21210013302.

It is a super-2 number, since 2×20331001212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20331001191 and 20331001200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79573 + ... + 216780.

It is an arithmetic number, because the mean of its divisors is an integer number (1976977534).

Almost surely, 2^20331001212 is an apocalyptic number.

It is an amenable number.

20331001212 is an abundant number, since it is smaller than the sum of its proper divisors (27116459604).

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

20331001212 is a wasteful number, since it uses less digits than its factorization.

20331001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302077 (or 302075 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20331001212 its reverse (21210013302), we get a palindrome (41541014514).

The spelling of 20331001212 in words is "twenty billion, three hundred thirty-one million, one thousand, two hundred twelve".