2151220603 has 24 divisors (see below), whose sum is σ = 2674268160. Its totient is φ = 1690405200.

The previous prime is 2151220583. The next prime is 2151220607. The reversal of 2151220603 is 3060221512.

It is not a de Polignac number, because 2151220603 - 2⁹ = 2151220091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151220607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119398 + ... + 136228.

It is an arithmetic number, because the mean of its divisors is an integer number (111427840).

Almost surely, 2^2151220603 is an apocalyptic number.

2151220603 is a deficient number, since it is larger than the sum of its proper divisors (523047557).

2151220603 is a wasteful number, since it uses less digits than its factorization.

2151220603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16919 (or 16888 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2151220603 is about 46381.2527105511. The cubic root of 2151220603 is about 1290.9070805113.

Subtracting 2151220603 from its reverse (3060221512), we obtain a palindrome (909000909).

The spelling of 2151220603 in words is "two billion, one hundred fifty-one million, two hundred twenty thousand, six hundred three".