2120251 has 8 divisors (see below), whose sum is σ = 2432000. Its totient is φ = 1810728.

The previous prime is 2120249. The next prime is 2120263. The reversal of 2120251 is 1520212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120251 - 2¹ = 2120249 is a prime.

It is a Duffinian number.

2120251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2120221) 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, 3190 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (304000).

2^2120251 is an apocalyptic number.

2120251 is a deficient number, since it is larger than the sum of its proper divisors (311749).

2120251 is an equidigital number, since it uses as much as digits as its factorization.

2120251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2120251 is about 1456.1081690589. The cubic root of 2120251 is about 128.4682354225.

Adding to 2120251 its reverse (1520212), we get a palindrome (3640463).

The spelling of 2120251 in words is "two million, one hundred twenty thousand, two hundred fifty-one".