2061122720 has 48 divisors (see below), whose sum is σ = 4873115520. Its totient is φ = 823820544.

The previous prime is 2061122711. The next prime is 2061122729. The reversal of 2061122720 is 272211602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2061122711) and next prime (2061122729).

It is not an unprimeable number, because it can be changed into a prime (2061122729) 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, 245309 + ... + 253571.

It is an arithmetic number, because the mean of its divisors is an integer number (101523240).

Almost surely, 2^2061122720 is an apocalyptic number.

2061122720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061122720 is an abundant number, since it is smaller than the sum of its proper divisors (2811992800).

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

2061122720 is a wasteful number, since it uses less digits than its factorization.

2061122720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837 (or 9829 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2061122720 is about 45399.5894254563. The cubic root of 2061122720 is about 1272.6274411986.

The spelling of 2061122720 in words is "two billion, sixty-one million, one hundred twenty-two thousand, seven hundred twenty".