20021210201112 has 128 divisors (see below), whose sum is σ = 51146588160000. Its totient is φ = 6529540913280.

The previous prime is 20021210201089. The next prime is 20021210201119. The reversal of 20021210201112 is 21110201212002.

It is a super-2 number, since 2×20021210201112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021210201091 and 20021210201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021210201119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129796689 + ... + 129950847.

It is an arithmetic number, because the mean of its divisors is an integer number (399582720000).

Almost surely, 2^{20021210201112} is an apocalyptic number.

It is an amenable number.

20021210201112 is an abundant number, since it is smaller than the sum of its proper divisors (31125377958888).

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

20021210201112 is a wasteful number, since it uses less digits than its factorization.

20021210201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154821 (or 154817 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021210201112 its reverse (21110201212002), we get a palindrome (41131411413114).

The spelling of 20021210201112 in words is "twenty trillion, twenty-one billion, two hundred ten million, two hundred one thousand, one hundred twelve".