20021022211312 has 40 divisors (see below), whose sum is σ = 38873648614752. Its totient is φ = 9989134540800.

The previous prime is 20021022211303. The next prime is 20021022211361. The reversal of 20021022211312 is 21311222012002.

It is a super-2 number, since 2×20021022211312² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021022211312.

It is a congruent number.

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, 14142637 + ... + 15493747.

Almost surely, 2^{20021022211312} is an apocalyptic number.

It is an amenable number.

20021022211312 is a deficient number, since it is larger than the sum of its proper divisors (18852626403440).

20021022211312 is a wasteful number, since it uses less digits than its factorization.

20021022211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353097 (or 1353091 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20021022211312 its reverse (21311222012002), we get a palindrome (41332244223314).

The spelling of 20021022211312 in words is "twenty trillion, twenty-one billion, twenty-two million, two hundred eleven thousand, three hundred twelve".