2112021210020 has 12 divisors (see below), whose sum is σ = 4435244541084. Its totient is φ = 844808484000.

The previous prime is 2112021209939. The next prime is 2112021210037. The reversal of 2112021210020 is 200121202112.

It can be written as a sum of positive squares in 2 ways, for example, as 1474859655844 + 637161554176 = 1214438^2 + 798224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2112021209977 and 2112021210004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52800530231 + ... + 52800530270.

It is an arithmetic number, because the mean of its divisors is an integer number (369603711757).

Almost surely, 2^{2112021210020} is an apocalyptic number.

2112021210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112021210020 is an abundant number, since it is smaller than the sum of its proper divisors (2323223331064).

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

2112021210020 is a wasteful number, since it uses less digits than its factorization.

2112021210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105601060510 (or 105601060508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112021210020 its reverse (200121202112), we get a palindrome (2312142412132).

The spelling of 2112021210020 in words is "two trillion, one hundred twelve billion, twenty-one million, two hundred ten thousand, twenty".