20021201121112 has 32 divisors (see below), whose sum is σ = 37552181345280. Its totient is φ = 10007286613920.

The previous prime is 20021201121109. The next prime is 20021201121133. The reversal of 20021201121112 is 21112110212002.

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, 409650037 + ... + 409698907.

It is an arithmetic number, because the mean of its divisors is an integer number (1173505667040).

Almost surely, 2^{20021201121112} is an apocalyptic number.

It is an amenable number.

20021201121112 is a deficient number, since it is larger than the sum of its proper divisors (17530980224168).

20021201121112 is a wasteful number, since it uses less digits than its factorization.

20021201121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64783 (or 64779 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20021201121112 its reverse (21112110212002), we get a palindrome (41133311333114).

The spelling of 20021201121112 in words is "twenty trillion, twenty-one billion, two hundred one million, one hundred twenty-one thousand, one hundred twelve".