101210987 has 2 divisors, whose sum is σ = 101210988. Its totient is φ = 101210986.

The previous prime is 101210983. The next prime is 101211007. The reversal of 101210987 is 789012101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101210987 - 2² = 101210983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (101210983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605493 + 50605494.

It is an arithmetic number, because the mean of its divisors is an integer number (50605494).

Almost surely, 2^101210987 is an apocalyptic number.

101210987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210987 is an equidigital number, since it uses as much as digits as its factorization.

101210987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 101210987 is about 10060.3671404179. The cubic root of 101210987 is about 466.0250052587.

The spelling of 101210987 in words is "one hundred one million, two hundred ten thousand, nine hundred eighty-seven".