2021012011120 has 80 divisors (see below), whose sum is σ = 4908560832000. Its totient is φ = 772403588352.

The previous prime is 2021012011093. The next prime is 2021012011163. The reversal of 2021012011120 is 211102101202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2021012011120.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1063381 + ... + 2274379.

It is an arithmetic number, because the mean of its divisors is an integer number (61357010400).

Almost surely, 2^{2021012011120} is an apocalyptic number.

2021012011120 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 2021012011120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2454280416000).

2021012011120 is an abundant number, since it is smaller than the sum of its proper divisors (2887548820880).

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

2021012011120 is a wasteful number, since it uses less digits than its factorization.

2021012011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211942 (or 1211936 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021012011120 its reverse (211102101202), we get a palindrome (2232114112322).

The spelling of 2021012011120 in words is "two trillion, twenty-one billion, twelve million, eleven thousand, one hundred twenty".