2051701121 has 4 divisors (see below), whose sum is σ = 2052237744. Its totient is φ = 2051164500.

The previous prime is 2051701109. The next prime is 2051701133. The reversal of 2051701121 is 1211071502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2051701109) and next prime (2051701133).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051701121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2051701093 and 2051701102.

It is not an unprimeable number, because it can be changed into a prime (2051701621) 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, 262535 + ... + 270236.

It is an arithmetic number, because the mean of its divisors is an integer number (513059436).

Almost surely, 2^2051701121 is an apocalyptic number.

It is an amenable number.

2051701121 is a deficient number, since it is larger than the sum of its proper divisors (536623).

2051701121 is an equidigital number, since it uses as much as digits as its factorization.

2051701121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536622.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 2051701121 is about 45295.7075339375. The cubic root of 2051701121 is about 1270.6853764369.

Adding to 2051701121 its reverse (1211071502), we get a palindrome (3262772623).

The spelling of 2051701121 in words is "two billion, fifty-one million, seven hundred one thousand, one hundred twenty-one".