212503566551 has 2 divisors, whose sum is σ = 212503566552. Its totient is φ = 212503566550.

The previous prime is 212503566511. The next prime is 212503566559. The reversal of 212503566551 is 155665305212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212503566551 - 2¹⁸ = 212503304407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212503566499 and 212503566508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212503566559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106251783275 + 106251783276.

It is an arithmetic number, because the mean of its divisors is an integer number (106251783276).

Almost surely, 2^212503566551 is an apocalyptic number.

212503566551 is a deficient number, since it is larger than the sum of its proper divisors (1).

212503566551 is an equidigital number, since it uses as much as digits as its factorization.

212503566551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 212503566551 in words is "two hundred twelve billion, five hundred three million, five hundred sixty-six thousand, five hundred fifty-one".