2001121754 has 8 divisors (see below), whose sum is σ = 3002807808. Its totient is φ = 1000185820.

The previous prime is 2001121753. The next prime is 2001121757. The reversal of 2001121754 is 4571211002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2001121751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180812 + ... + 191559.

It is an arithmetic number, because the mean of its divisors is an integer number (375350976).

Almost surely, 2^2001121754 is an apocalyptic number.

2001121754 is a deficient number, since it is larger than the sum of its proper divisors (1001686054).

2001121754 is a wasteful number, since it uses less digits than its factorization.

2001121754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375060.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2001121754 is about 44733.8993829065. The cubic root of 2001121754 is about 1260.1565594493.

Adding to 2001121754 its reverse (4571211002), we get a palindrome (6572332756).

The spelling of 2001121754 in words is "two billion, one million, one hundred twenty-one thousand, seven hundred fifty-four".