101210111987 has 4 divisors (see below), whose sum is σ = 101296543656. Its totient is φ = 101123680320.

The previous prime is 101210111957. The next prime is 101210112023. The reversal of 101210111987 is 789111012101.

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

It is a cyclic number.

It is not a de Polignac number, because 101210111987 - 2¹² = 101210107891 is a prime.

It is a super-3 number, since 3×101210111987³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101210111957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43214078 + ... + 43216419.

It is an arithmetic number, because the mean of its divisors is an integer number (25324135914).

Almost surely, 2^101210111987 is an apocalyptic number.

101210111987 is a deficient number, since it is larger than the sum of its proper divisors (86431669).

101210111987 is an equidigital number, since it uses as much as digits as its factorization.

101210111987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86431668.

The product of its (nonzero) digits is 1008, while the sum is 32.

The spelling of 101210111987 in words is "one hundred one billion, two hundred ten million, one hundred eleven thousand, nine hundred eighty-seven".