212412551 has 16 divisors (see below), whose sum is σ = 232478400. Its totient is φ = 194055264.

The previous prime is 212412539. The next prime is 212412583. The reversal of 212412551 is 155214212.

It is not a de Polignac number, because 212412551 - 2¹⁰ = 212411527 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 (212412511) 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, 239030 + ... + 239916.

It is an arithmetic number, because the mean of its divisors is an integer number (14529900).

Almost surely, 2^212412551 is an apocalyptic number.

212412551 is a deficient number, since it is larger than the sum of its proper divisors (20065849).

212412551 is an equidigital number, since it uses as much as digits as its factorization.

212412551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1009 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 212412551 is about 14574.3799525057. The cubic root of 212412551 is about 596.6597267623.

Adding to 212412551 its reverse (155214212), we get a palindrome (367626763).

The spelling of 212412551 in words is "two hundred twelve million, four hundred twelve thousand, five hundred fifty-one".