20021012012012 has 24 divisors (see below), whose sum is σ = 38364021012240. Its totient is φ = 9066629293760.

The previous prime is 20021012011993. The next prime is 20021012012021. The reversal of 20021012012012 is 21021021012002.

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, 845755823 + ... + 845779494.

It is an arithmetic number, because the mean of its divisors is an integer number (1598500875510).

Almost surely, 2^{20021012012012} is an apocalyptic number.

20021012012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021012012012 is a deficient number, since it is larger than the sum of its proper divisors (18343009000228).

20021012012012 is a wasteful number, since it uses less digits than its factorization.

20021012012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691535601 (or 1691535599 counting only the distinct ones).

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

Adding to 20021012012012 its reverse (21021021012002), we get a palindrome (41042033024014).

The spelling of 20021012012012 in words is "twenty trillion, twenty-one billion, twelve million, twelve thousand, twelve".