211201121109 has 32 divisors (see below), whose sum is σ = 310323363840. Its totient is φ = 126700616000.

The previous prime is 211201121099. The next prime is 211201121119. The reversal of 211201121109 is 901121102112.

It is an interprime number because it is at equal distance from previous prime (211201121099) and next prime (211201121119).

It is a cyclic number.

It is not a de Polignac number, because 211201121109 - 2⁵ = 211201121077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201121119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20949532 + ... + 20959610.

It is an arithmetic number, because the mean of its divisors is an integer number (9697605120).

Almost surely, 2^211201121109 is an apocalyptic number.

It is an amenable number.

211201121109 is a deficient number, since it is larger than the sum of its proper divisors (99122242731).

211201121109 is a wasteful number, since it uses less digits than its factorization.

211201121109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16481.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 211201121109 in words is "two hundred eleven billion, two hundred one million, one hundred twenty-one thousand, one hundred nine".