1221134000287 has 2 divisors, whose sum is σ = 1221134000288. Its totient is φ = 1221134000286.

The previous prime is 1221134000269. The next prime is 1221134000341. The reversal of 1221134000287 is 7820004311221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221134000287 - 2³¹ = 1218986516639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221134000257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610567000143 + 610567000144.

It is an arithmetic number, because the mean of its divisors is an integer number (610567000144).

Almost surely, 2^{1221134000287} is an apocalyptic number.

1221134000287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221134000287 is an equidigital number, since it uses as much as digits as its factorization.

1221134000287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 1221134000287 in words is "one trillion, two hundred twenty-one billion, one hundred thirty-four million, two hundred eighty-seven", and thus it is an aban number.