20001011001212 has 24 divisors (see below), whose sum is σ = 35132605305840. Its totient is φ = 9963125291520.

The previous prime is 20001011001173. The next prime is 20001011001217. The reversal of 20001011001212 is 21210011010002.

It is a junction number, because it is equal to n+sod(n) for n = 20001011001193 and 20001011001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001011001217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61920887 + ... + 62243057.

It is an arithmetic number, because the mean of its divisors is an integer number (1463858554410).

Almost surely, 2^{20001011001212} is an apocalyptic number.

It is an amenable number.

20001011001212 is a deficient number, since it is larger than the sum of its proper divisors (15131594304628).

20001011001212 is a wasteful number, since it uses less digits than its factorization.

20001011001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380141 (or 380139 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001011001212 its reverse (21210011010002), we get a palindrome (41211022011214).

The spelling of 20001011001212 in words is "twenty trillion, one billion, eleven million, one thousand, two hundred twelve".