2112002121220 has 24 divisors (see below), whose sum is σ = 4668636268800. Its totient is φ = 800337645792.

The previous prime is 2112002121197. The next prime is 2112002121223. The reversal of 2112002121220 is 221212002112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2112002121194 and 2112002121203.

It is not an unprimeable number, because it can be changed into a prime (2112002121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2778949780 + ... + 2778950539.

It is an arithmetic number, because the mean of its divisors is an integer number (194526511200).

Almost surely, 2^{2112002121220} is an apocalyptic number.

2112002121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112002121220 is an abundant number, since it is smaller than the sum of its proper divisors (2556634147580).

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

2112002121220 is a wasteful number, since it uses less digits than its factorization.

2112002121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557900347 (or 5557900345 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2112002121220 its reverse (221212002112), we get a palindrome (2333214123332).

The spelling of 2112002121220 in words is "two trillion, one hundred twelve billion, two million, one hundred twenty-one thousand, two hundred twenty".