2120222001220 has 48 divisors (see below), whose sum is σ = 4536488597760. Its totient is φ = 832216260096.

The previous prime is 2120222001109. The next prime is 2120222001241. The reversal of 2120222001220 is 221002220212.

It is a junction number, because it is equal to n+sod(n) for n = 2120222001194 and 2120222001203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3858757 + ... + 4373836.

It is an arithmetic number, because the mean of its divisors is an integer number (94510179120).

Almost surely, 2^{2120222001220} is an apocalyptic number.

2120222001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120222001220 is an abundant number, since it is smaller than the sum of its proper divisors (2416266596540).

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

2120222001220 is a wasteful number, since it uses less digits than its factorization.

2120222001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232844 (or 8232842 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2120222001220 its reverse (221002220212), we get a palindrome (2341224221432).

The spelling of 2120222001220 in words is "two trillion, one hundred twenty billion, two hundred twenty-two million, one thousand, two hundred twenty".