51212244221215 has 64 divisors (see below), whose sum is σ = 76741464683520. Its totient is φ = 31873450752000.

The previous prime is 51212244221209. The next prime is 51212244221251.

51212244221215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51212244221215 - 2¹³ = 51212244213023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 893275671 + ... + 893332999.

It is an arithmetic number, because the mean of its divisors is an integer number (1199085385680).

Almost surely, 2^{51212244221215} is an apocalyptic number.

51212244221215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51212244221215 is a deficient number, since it is larger than the sum of its proper divisors (25529220462305).

51212244221215 is a wasteful number, since it uses less digits than its factorization.

51212244221215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61024.

The product of its digits is 25600, while the sum is 34.

It can be divided in two parts, 5121224 and 4221215, that added together give a palindrome (9342439).

The spelling of 51212244221215 in words is "fifty-one trillion, two hundred twelve billion, two hundred forty-four million, two hundred twenty-one thousand, two hundred fifteen".