20012212011212 has 12 divisors (see below), whose sum is σ = 37081451667960. Its totient is φ = 9417511534656.

The previous prime is 20012212011167. The next prime is 20012212011217. The reversal of 20012212011212 is 21211021221002.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20012212011217) 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, 147148617662 + ... + 147148617797.

It is an arithmetic number, because the mean of its divisors is an integer number (3090120972330).

Almost surely, 2^{20012212011212} is an apocalyptic number.

It is an amenable number.

20012212011212 is a deficient number, since it is larger than the sum of its proper divisors (17069239656748).

20012212011212 is a wasteful number, since it uses less digits than its factorization.

20012212011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294297235480 (or 294297235478 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20012212011212 its reverse (21211021221002), we get a palindrome (41223233232214).

The spelling of 20012212011212 in words is "twenty trillion, twelve billion, two hundred twelve million, eleven thousand, two hundred twelve".