2120221240 has 16 divisors (see below), whose sum is σ = 4770497880. Its totient is φ = 848088480.

The previous prime is 2120221199. The next prime is 2120221261. The reversal of 2120221240 is 421220212.

It is a super-3 number, since 3×2120221240³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

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, 26502726 + ... + 26502805.

Almost surely, 2^2120221240 is an apocalyptic number.

2120221240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120221240 is an abundant number, since it is smaller than the sum of its proper divisors (2650276640).

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

2120221240 is a wasteful number, since it uses less digits than its factorization.

2120221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53005542 (or 53005538 counting only the distinct ones).

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

The square root of 2120221240 is about 46045.8601830827. The cubic root of 2120221240 is about 1284.6763435650.

Adding to 2120221240 its reverse (421220212), we get a palindrome (2541441452).

The spelling of 2120221240 in words is "two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred forty".