2001029122 has 4 divisors (see below), whose sum is σ = 3001543686. Its totient is φ = 1000514560.

The previous prime is 2001029113. The next prime is 2001029159. The reversal of 2001029122 is 2219201002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1357848801 + 643180321 = 36849^2 + 25361^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2001029122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500257279 + ... + 500257282.

Almost surely, 2^2001029122 is an apocalyptic number.

2001029122 is a deficient number, since it is larger than the sum of its proper divisors (1000514564).

2001029122 is a wasteful number, since it uses less digits than its factorization.

2001029122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000514563.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2001029122 is about 44732.8640039960. The cubic root of 2001029122 is about 1260.1371149180.

The spelling of 2001029122 in words is "two billion, one million, twenty-nine thousand, one hundred twenty-two".