100212320987 has 16 divisors (see below), whose sum is σ = 107180146080. Its totient is φ = 93365809152.

The previous prime is 100212320981. The next prime is 100212320993. The reversal of 100212320987 is 789023212001.

It is an interprime number because it is at equal distance from previous prime (100212320981) and next prime (100212320993).

It is a cyclic number.

It is not a de Polignac number, because 100212320987 - 2¹⁴ = 100212304603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100212320981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521848 + ... + 1586330.

It is an arithmetic number, because the mean of its divisors is an integer number (6698759130).

Almost surely, 2^100212320987 is an apocalyptic number.

100212320987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

100212320987 is a deficient number, since it is larger than the sum of its proper divisors (6967825093).

100212320987 is a wasteful number, since it uses less digits than its factorization.

100212320987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65422.

The product of its (nonzero) digits is 12096, while the sum is 35.

Adding to 100212320987 its reverse (789023212001), we get a palindrome (889235532988).

The spelling of 100212320987 in words is "one hundred billion, two hundred twelve million, three hundred twenty thousand, nine hundred eighty-seven".