551212212155 has 16 divisors (see below), whose sum is σ = 728731327968. Its totient is φ = 396912480000.

The previous prime is 551212212139. The next prime is 551212212167.

551212212155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551212212155 - 2⁴ = 551212212139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49608506 + ... + 49619615.

It is an arithmetic number, because the mean of its divisors is an integer number (45545707998).

Almost surely, 2^551212212155 is an apocalyptic number.

551212212155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551212212155 is a deficient number, since it is larger than the sum of its proper divisors (177519115813).

551212212155 is a wasteful number, since it uses less digits than its factorization.

551212212155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99228238.

The product of its digits is 10000, while the sum is 32.

It can be divided in two parts, 551212 and 212155, that added together give a palindrome (763367).

The spelling of 551212212155 in words is "five hundred fifty-one billion, two hundred twelve million, two hundred twelve thousand, one hundred fifty-five".