2101251 has 8 divisors (see below), whose sum is σ = 2966544. Its totient is φ = 1318400.

The previous prime is 2101249. The next prime is 2101259. The reversal of 2101251 is 1521012.

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 2101251 - 2¹ = 2101249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101259) 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, 20550 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (370818).

2^2101251 is an apocalyptic number.

2101251 is a deficient number, since it is larger than the sum of its proper divisors (865293).

2101251 is a wasteful number, since it uses less digits than its factorization.

2101251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41221.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2101251 is about 1449.5692463625. The cubic root of 2101251 is about 128.0833400944.

Adding to 2101251 its reverse (1521012), we get a palindrome (3622263).

The spelling of 2101251 in words is "two million, one hundred one thousand, two hundred fifty-one".