21020322203112 has 32 divisors (see below), whose sum is σ = 52964591385600. Its totient is φ = 6951602617344.

The previous prime is 21020322203099. The next prime is 21020322203131. The reversal of 21020322203112 is 21130222302012.

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, 3448212537 + ... + 3448218632.

It is an arithmetic number, because the mean of its divisors is an integer number (1655143480800).

Almost surely, 2^{21020322203112} is an apocalyptic number.

It is an amenable number.

21020322203112 is an abundant number, since it is smaller than the sum of its proper divisors (31944269182488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21020322203112 is a wasteful number, since it uses less digits than its factorization.

21020322203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896431305 (or 6896431301 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21020322203112 its reverse (21130222302012), we get a palindrome (42150544505124).

The spelling of 21020322203112 in words is "twenty-one trillion, twenty billion, three hundred twenty-two million, two hundred three thousand, one hundred twelve".