212235011551 has 2 divisors, whose sum is σ = 212235011552. Its totient is φ = 212235011550.

The previous prime is 212235011501. The next prime is 212235011557. The reversal of 212235011551 is 155110532212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212235011551 - 2¹³ = 212235003359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212235011557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106117505775 + 106117505776.

It is an arithmetic number, because the mean of its divisors is an integer number (106117505776).

Almost surely, 2^212235011551 is an apocalyptic number.

212235011551 is a deficient number, since it is larger than the sum of its proper divisors (1).

212235011551 is an equidigital number, since it uses as much as digits as its factorization.

212235011551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 212235011551 its reverse (155110532212), we get a palindrome (367345543763).

The spelling of 212235011551 in words is "two hundred twelve billion, two hundred thirty-five million, eleven thousand, five hundred fifty-one".