2001211695 has 144 divisors (see below), whose sum is σ = 4309987968. Its totient is φ = 853493760.

The previous prime is 2001211649. The next prime is 2001211697. The reversal of 2001211695 is 5961121002.

It is not a de Polignac number, because 2001211695 - 2⁶ = 2001211631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001211697) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7384410 + ... + 7384680.

It is an arithmetic number, because the mean of its divisors is an integer number (29930472).

Almost surely, 2^2001211695 is an apocalyptic number.

2001211695 is an abundant number, since it is smaller than the sum of its proper divisors (2308776273).

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

2001211695 is a wasteful number, since it uses less digits than its factorization.

2001211695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 2001211695 is about 44734.9046606786. The cubic root of 2001211695 is about 1260.1754385343.

Adding to 2001211695 its reverse (5961121002), we get a palindrome (7962332697).

The spelling of 2001211695 in words is "two billion, one million, two hundred eleven thousand, six hundred ninety-five".