20001002001212 has 12 divisors (see below), whose sum is σ = 35052407274696. Its totient is φ = 9986028494160.

The previous prime is 20001002001181. The next prime is 20001002001257. The reversal of 20001002001212 is 21210020010002.

It is a happy number.

It is a super-3 number, since 3×20001002001212³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001002001193 and 20001002001202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3618123503 + ... + 3618129030.

It is an arithmetic number, because the mean of its divisors is an integer number (2921033939558).

Almost surely, 2^{20001002001212} is an apocalyptic number.

It is an amenable number.

20001002001212 is a deficient number, since it is larger than the sum of its proper divisors (15051405273484).

20001002001212 is a wasteful number, since it uses less digits than its factorization.

20001002001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236253228 (or 7236253226 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001002001212 its reverse (21210020010002), we get a palindrome (41211022011214).

The spelling of 20001002001212 in words is "twenty trillion, one billion, two million, one thousand, two hundred twelve".