101201211987 has 4 divisors (see below), whose sum is σ = 134934949320. Its totient is φ = 67467474656.

The previous prime is 101201211977. The next prime is 101201211997. The reversal of 101201211987 is 789112102101.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (101201211977) and next prime (101201211997).

It is a cyclic number.

It is not a de Polignac number, because 101201211987 - 2⁴ = 101201211971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101201211977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16866868662 + ... + 16866868667.

It is an arithmetic number, because the mean of its divisors is an integer number (33733737330).

Almost surely, 2^101201211987 is an apocalyptic number.

101201211987 is a deficient number, since it is larger than the sum of its proper divisors (33733737333).

101201211987 is an equidigital number, since it uses as much as digits as its factorization.

101201211987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33733737332.

The product of its (nonzero) digits is 2016, while the sum is 33.

The spelling of 101201211987 in words is "one hundred one billion, two hundred one million, two hundred eleven thousand, nine hundred eighty-seven".