2144202120251 has 4 divisors (see below), whose sum is σ = 2144775593400. Its totient is φ = 2143628647104.

The previous prime is 2144202120149. The next prime is 2144202120271. The reversal of 2144202120251 is 1520212024412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2144202120251 - 2¹⁸ = 2144201858107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2144202120251.

It is not an unprimeable number, because it can be changed into a prime (2144202120271) 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, 286730966 + ... + 286738443.

It is an arithmetic number, because the mean of its divisors is an integer number (536193898350).

Almost surely, 2^{2144202120251} is an apocalyptic number.

2144202120251 is a deficient number, since it is larger than the sum of its proper divisors (573473149).

2144202120251 is an equidigital number, since it uses as much as digits as its factorization.

2144202120251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573473148.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 2144202120251 its reverse (1520212024412), we get a palindrome (3664414144663).

The spelling of 2144202120251 in words is "two trillion, one hundred forty-four billion, two hundred two million, one hundred twenty thousand, two hundred fifty-one".