1111222201987 has 2 divisors, whose sum is σ = 1111222201988. Its totient is φ = 1111222201986.

The previous prime is 1111222201979. The next prime is 1111222202003. The reversal of 1111222201987 is 7891022221111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111222201987 - 2³ = 1111222201979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111222201967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555611100993 + 555611100994.

It is an arithmetic number, because the mean of its divisors is an integer number (555611100994).

Almost surely, 2^{1111222201987} is an apocalyptic number.

1111222201987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111222201987 is an equidigital number, since it uses as much as digits as its factorization.

1111222201987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 37.

The spelling of 1111222201987 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, two hundred one thousand, nine hundred eighty-seven".