12121201087 has 2 divisors, whose sum is σ = 12121201088. Its totient is φ = 12121201086.

The previous prime is 12121201051. The next prime is 12121201109. The reversal of 12121201087 is 78010212121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121201087 - 2¹¹ = 12121199039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121201007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060600543 + 6060600544.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600544).

Almost surely, 2^12121201087 is an apocalyptic number.

12121201087 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121201087 is an equidigital number, since it uses as much as digits as its factorization.

12121201087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 12121201087 in words is "twelve billion, one hundred twenty-one million, two hundred one thousand, eighty-seven".