102212551 has 16 divisors (see below), whose sum is σ = 123952896. Its totient is φ = 82279296.

The previous prime is 102212543. The next prime is 102212557. The reversal of 102212551 is 155212201.

It is a cyclic number.

It is not a de Polignac number, because 102212551 - 2³ = 102212543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107460 + ... + 108406.

It is an arithmetic number, because the mean of its divisors is an integer number (7747056).

Almost surely, 2^102212551 is an apocalyptic number.

102212551 is a deficient number, since it is larger than the sum of its proper divisors (21740345).

102212551 is an equidigital number, since it uses as much as digits as its factorization.

102212551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 102212551 is about 10110.0223046243. The cubic root of 102212551 is about 467.5571928084.

Adding to 102212551 its reverse (155212201), we get a palindrome (257424752).

The spelling of 102212551 in words is "one hundred two million, two hundred twelve thousand, five hundred fifty-one".