20021012001212 has 12 divisors (see below), whose sum is σ = 36880811581320. Its totient is φ = 9483637263696.

The previous prime is 20021012001197. The next prime is 20021012001217. The reversal of 20021012001212 is 21210021012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021012001217) 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, 131717184143 + ... + 131717184294.

It is an arithmetic number, because the mean of its divisors is an integer number (3073400965110).

Almost surely, 2^{20021012001212} is an apocalyptic number.

It is an amenable number.

20021012001212 is a deficient number, since it is larger than the sum of its proper divisors (16859799580108).

20021012001212 is a wasteful number, since it uses less digits than its factorization.

20021012001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263434368460 (or 263434368458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021012001212 its reverse (21210021012002), we get a palindrome (41231033013214).

The spelling of 20021012001212 in words is "twenty trillion, twenty-one billion, twelve million, one thousand, two hundred twelve".