2112011221020 has 24 divisors (see below), whose sum is σ = 5913631419024. Its totient is φ = 563202992256.

The previous prime is 2112011220959. The next prime is 2112011221081. The reversal of 2112011221020 is 201221102112.

It is an interprime number because it is at equal distance from previous prime (2112011220959) and next prime (2112011221081).

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

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, 17600093449 + ... + 17600093568.

It is an arithmetic number, because the mean of its divisors is an integer number (246401309126).

Almost surely, 2^{2112011221020} is an apocalyptic number.

2112011221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112011221020 is an abundant number, since it is smaller than the sum of its proper divisors (3801620198004).

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

2112011221020 is a wasteful number, since it uses less digits than its factorization.

2112011221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35200187029 (or 35200187027 counting only the distinct ones).

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

Adding to 2112011221020 its reverse (201221102112), we get a palindrome (2313232323132).

The spelling of 2112011221020 in words is "two trillion, one hundred twelve billion, eleven million, two hundred twenty-one thousand, twenty".