100212102121787 has 2 divisors, whose sum is σ = 100212102121788. Its totient is φ = 100212102121786.

The previous prime is 100212102121721. The next prime is 100212102121939. The reversal of 100212102121787 is 787121201212001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100212102121787 - 2³⁶ = 100143382645051 is a prime.

It is not a weakly prime, because it can be changed into another prime (100212102121387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106051060893 + 50106051060894.

It is an arithmetic number, because the mean of its divisors is an integer number (50106051060894).

Almost surely, 2^{100212102121787} is an apocalyptic number.

100212102121787 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212102121787 is an equidigital number, since it uses as much as digits as its factorization.

100212102121787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 35.

Adding to 100212102121787 its reverse (787121201212001), we get a palindrome (887333303333788).

The spelling of 100212102121787 in words is "one hundred trillion, two hundred twelve billion, one hundred two million, one hundred twenty-one thousand, seven hundred eighty-seven".