1201221110087 has 2 divisors, whose sum is σ = 1201221110088. Its totient is φ = 1201221110086.

The previous prime is 1201221110057. The next prime is 1201221110123. The reversal of 1201221110087 is 7800111221021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201221110087 - 2¹⁴ = 1201221093703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221110057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610555043 + 600610555044.

It is an arithmetic number, because the mean of its divisors is an integer number (600610555044).

Almost surely, 2^{1201221110087} is an apocalyptic number.

1201221110087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221110087 is an equidigital number, since it uses as much as digits as its factorization.

1201221110087 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 26.

The spelling of 1201221110087 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred ten thousand, eighty-seven".