2120901 has 8 divisors (see below), whose sum is σ = 2881440. Its totient is φ = 1387152.

The previous prime is 2120891. The next prime is 2120917. The reversal of 2120901 is 1090212.

It is a happy number.

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

It is not a de Polignac number, because 2120901 - 2¹⁰ = 2119877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6511 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (360180).

2^2120901 is an apocalyptic number.

It is an amenable number.

2120901 is a deficient number, since it is larger than the sum of its proper divisors (760539).

2120901 is a wasteful number, since it uses less digits than its factorization.

2120901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13395.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2120901 is about 1456.3313496591. The cubic root of 2120901 is about 128.4813621422.

The spelling of 2120901 in words is "two million, one hundred twenty thousand, nine hundred one".