2001122070 has 32 divisors (see below), whose sum is σ = 4804627968. Its totient is φ = 533417568.

The previous prime is 2001122069. The next prime is 2001122077. The reversal of 2001122070 is 702211002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001122077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70957 + ... + 95063.

It is an arithmetic number, because the mean of its divisors is an integer number (150144624).

Almost surely, 2^2001122070 is an apocalyptic number.

2001122070 is an abundant number, since it is smaller than the sum of its proper divisors (2803505898).

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

2001122070 is a wasteful number, since it uses less digits than its factorization.

2001122070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26884.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2001122070 is about 44733.9029149034. The cubic root of 2001122070 is about 1260.1566257803.

Adding to 2001122070 its reverse (702211002), we get a palindrome (2703333072).

The spelling of 2001122070 in words is "two billion, one million, one hundred twenty-two thousand, seventy".