211021021021099 has 8 divisors (see below), whose sum is σ = 211619462429232. Its totient is φ = 210422583275520.

The previous prime is 211021021021051. The next prime is 211021021021157. The reversal of 211021021021099 is 990120120120112.

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

It is a cyclic number.

It is not a de Polignac number, because 211021021021099 - 2³⁹ = 210471265207211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211021021021099.

It is not an unprimeable number, because it can be changed into a prime (211021021021049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149421372 + ... + 150827014.

It is an arithmetic number, because the mean of its divisors is an integer number (26452432803654).

Almost surely, 2^{211021021021099} is an apocalyptic number.

211021021021099 is a deficient number, since it is larger than the sum of its proper divisors (598441408133).

211021021021099 is a wasteful number, since it uses less digits than its factorization.

211021021021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831277.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 211021021021099 in words is "two hundred eleven trillion, twenty-one billion, twenty-one million, twenty-one thousand, ninety-nine".