101221212010999 has 2 divisors, whose sum is σ = 101221212011000. Its totient is φ = 101221212010998.

The previous prime is 101221212010951. The next prime is 101221212011077. The reversal of 101221212010999 is 999010212122101.

It is a weak prime.

It is an emirp because it is prime and its reverse (999010212122101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101221212010999 - 2³¹ = 101219064527351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221212011999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610606005499 + 50610606005500.

It is an arithmetic number, because the mean of its divisors is an integer number (50610606005500).

Almost surely, 2^{101221212010999} is an apocalyptic number.

101221212010999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221212010999 is an equidigital number, since it uses as much as digits as its factorization.

101221212010999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 101221212010999 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twelve million, ten thousand, nine hundred ninety-nine".