2001171322424 has 8 divisors (see below), whose sum is σ = 3752196229560. Its totient is φ = 1000585661208.

The previous prime is 2001171322399. The next prime is 2001171322439. The reversal of 2001171322424 is 4242231711002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125073207644 + ... + 125073207659.

It is an arithmetic number, because the mean of its divisors is an integer number (469024528695).

Almost surely, 2^{2001171322424} is an apocalyptic number.

It is an amenable number.

2001171322424 is a deficient number, since it is larger than the sum of its proper divisors (1751024907136).

2001171322424 is a wasteful number, since it uses less digits than its factorization.

2001171322424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250146415309 (or 250146415305 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 2001171322424 in words is "two trillion, one billion, one hundred seventy-one million, three hundred twenty-two thousand, four hundred twenty-four".