2120101201220 has 24 divisors (see below), whose sum is σ = 4470686443608. Its totient is φ = 844521638400.

The previous prime is 2120101201213. The next prime is 2120101201241. The reversal of 2120101201220 is 221021010212.

It can be written as a sum of positive squares in 4 ways, for example, as 1046643579136 + 1073457622084 = 1023056^2 + 1036078^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120101201195 and 2120101201204.

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, 219922691 + ... + 219932330.

It is an arithmetic number, because the mean of its divisors is an integer number (186278601817).

Almost surely, 2^{2120101201220} is an apocalyptic number.

2120101201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120101201220 is an abundant number, since it is smaller than the sum of its proper divisors (2350585242388).

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

2120101201220 is a wasteful number, since it uses less digits than its factorization.

2120101201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439855271 (or 439855269 counting only the distinct ones).

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

Adding to 2120101201220 its reverse (221021010212), we get a palindrome (2341122211432).

The spelling of 2120101201220 in words is "two trillion, one hundred twenty billion, one hundred one million, two hundred one thousand, two hundred twenty".