20031220130212 has 24 divisors (see below), whose sum is σ = 36349963372800. Its totient is φ = 9647164835616.

The previous prime is 20031220130209. The next prime is 20031220130221. The reversal of 20031220130212 is 21203102213002.

It is a self number, because there is not a number n which added to its sum of digits gives 20031220130212.

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, 206016948 + ... + 206114155.

It is an arithmetic number, because the mean of its divisors is an integer number (1514581807200).

Almost surely, 2^{20031220130212} is an apocalyptic number.

It is an amenable number.

20031220130212 is a deficient number, since it is larger than the sum of its proper divisors (16318743242588).

20031220130212 is a wasteful number, since it uses less digits than its factorization.

20031220130212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412131555 (or 412131553 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20031220130212 its reverse (21203102213002), we get a palindrome (41234322343214).

The spelling of 20031220130212 in words is "twenty trillion, thirty-one billion, two hundred twenty million, one hundred thirty thousand, two hundred twelve".