100021222219987 has 2 divisors, whose sum is σ = 100021222219988. Its totient is φ = 100021222219986.

The previous prime is 100021222219973. The next prime is 100021222220033. The reversal of 100021222219987 is 789912222120001.

It is an a-pointer prime, because the next prime (100021222220033) can be obtained adding 100021222219987 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100021222219987 - 2³⁹ = 99471466406099 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021222219927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010611109993 + 50010611109994.

It is an arithmetic number, because the mean of its divisors is an integer number (50010611109994).

Almost surely, 2^{100021222219987} is an apocalyptic number.

100021222219987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021222219987 is an equidigital number, since it uses as much as digits as its factorization.

100021222219987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

Adding to 100021222219987 its reverse (789912222120001), we get a palindrome (889933444339988).

The spelling of 100021222219987 in words is "one hundred trillion, twenty-one billion, two hundred twenty-two million, two hundred nineteen thousand, nine hundred eighty-seven".