211102021099 has 4 divisors (see below), whose sum is σ = 223519787064. Its totient is φ = 198684255136.

The previous prime is 211102021079. The next prime is 211102021187. The reversal of 211102021099 is 990120201112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211102021099 - 2¹³ = 211102012907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211102021079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6208882957 + ... + 6208882990.

It is an arithmetic number, because the mean of its divisors is an integer number (55879946766).

Almost surely, 2^211102021099 is an apocalyptic number.

211102021099 is a deficient number, since it is larger than the sum of its proper divisors (12417765965).

211102021099 is a wasteful number, since it uses less digits than its factorization.

211102021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12417765964.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 211102021099 in words is "two hundred eleven billion, one hundred two million, twenty-one thousand, ninety-nine".