211220102220999 has 8 divisors (see below), whose sum is σ = 281627066184192. Its totient is φ = 140813269869240.

The previous prime is 211220102220997. The next prime is 211220102221043. The reversal of 211220102220999 is 999022201022112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211220102220999 - 2¹ = 211220102220997 is a prime.

It is a super-2 number, since 2×211220102220999² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211220102220999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220102220997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29095197 + ... + 35622614.

It is an arithmetic number, because the mean of its divisors is an integer number (35203383273024).

Almost surely, 2^{211220102220999} is an apocalyptic number.

211220102220999 is a deficient number, since it is larger than the sum of its proper divisors (70406963963193).

211220102220999 is a wasteful number, since it uses less digits than its factorization.

211220102220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65805717.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 211220102220999 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred two million, two hundred twenty thousand, nine hundred ninety-nine".