20021020211312 has 40 divisors (see below), whose sum is σ = 38814826632576. Its totient is φ = 10004291721216.

The previous prime is 20021020211279. The next prime is 20021020211317. The reversal of 20021020211312 is 21311202012002.

It is a super-2 number, since 2×20021020211312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021020211317) 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, 468887948 + ... + 468930644.

Almost surely, 2^{20021020211312} is an apocalyptic number.

It is an amenable number.

20021020211312 is a deficient number, since it is larger than the sum of its proper divisors (18793806421264).

20021020211312 is a wasteful number, since it uses less digits than its factorization.

20021020211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60225 (or 60219 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20021020211312 its reverse (21311202012002), we get a palindrome (41332222223314).

The spelling of 20021020211312 in words is "twenty trillion, twenty-one billion, twenty million, two hundred eleven thousand, three hundred twelve".