2051221502 has 32 divisors (see below), whose sum is σ = 3431030400. Its totient is φ = 911858400.

The previous prime is 2051221483. The next prime is 2051221541.

It is a happy number.

2051221502 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235949 + ... + 244487.

It is an arithmetic number, because the mean of its divisors is an integer number (107219700).

Almost surely, 2^2051221502 is an apocalyptic number.

2051221502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2051221502 is a deficient number, since it is larger than the sum of its proper divisors (1379808898).

2051221502 is a wasteful number, since it uses less digits than its factorization.

2051221502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2051221502 is about 45290.4129148764. The cubic root of 2051221502 is about 1270.5863541608.

The spelling of 2051221502 in words is "two billion, fifty-one million, two hundred twenty-one thousand, five hundred two".