20112002121120 has 576 divisors, whose sum is σ = 79397430577920. Its totient is φ = 4241680515072.

The previous prime is 20112002121091. The next prime is 20112002121121. The reversal of 20112002121120 is 2112120021102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20112002121120.

It is not an unprimeable number, because it can be changed into a prime (20112002121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 834406989 + ... + 834431091.

It is an arithmetic number, because the mean of its divisors is an integer number (137842761420).

Almost surely, 2^{20112002121120} is an apocalyptic number.

20112002121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112002121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39698715288960).

20112002121120 is an abundant number, since it is smaller than the sum of its proper divisors (59285428456800).

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

20112002121120 is a wasteful number, since it uses less digits than its factorization.

20112002121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26877 (or 26862 counting only the distinct ones).

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

Adding to 20112002121120 its reverse (2112120021102), we get a palindrome (22224122142222).

The spelling of 20112002121120 in words is "twenty trillion, one hundred twelve billion, two million, one hundred twenty-one thousand, one hundred twenty".