212213427551 has 2 divisors, whose sum is σ = 212213427552. Its totient is φ = 212213427550.

The previous prime is 212213427541. The next prime is 212213427563. The reversal of 212213427551 is 155724312212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212213427551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212213427541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106713775 + 106106713776.

It is an arithmetic number, because the mean of its divisors is an integer number (106106713776).

Almost surely, 2^212213427551 is an apocalyptic number.

212213427551 is a deficient number, since it is larger than the sum of its proper divisors (1).

212213427551 is an equidigital number, since it uses as much as digits as its factorization.

212213427551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

Adding to 212213427551 its reverse (155724312212), we get a palindrome (367937739763).

The spelling of 212213427551 in words is "two hundred twelve billion, two hundred thirteen million, four hundred twenty-seven thousand, five hundred fifty-one".