211241121 has 16 divisors (see below), whose sum is σ = 346652544. Its totient is φ = 111423744.

The previous prime is 211241119. The next prime is 211241123. The reversal of 211241121 is 121142112.

It is an interprime number because it is at equal distance from previous prime (211241119) and next prime (211241123).

It is not a de Polignac number, because 211241121 - 2¹ = 211241119 is a prime.

It is a super-2 number, since 2×211241121² = 89245622402673282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211241121.

It is not an unprimeable number, because it can be changed into a prime (211241123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386616 + ... + 387161.

It is an arithmetic number, because the mean of its divisors is an integer number (21665784).

Almost surely, 2^211241121 is an apocalyptic number.

211241121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211241121 is a deficient number, since it is larger than the sum of its proper divisors (135411423).

211241121 is a wasteful number, since it uses less digits than its factorization.

211241121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773800.

The product of its digits is 32, while the sum is 15.

The square root of 211241121 is about 14534.1364036533. The cubic root of 211241121 is about 595.5608684039.

Adding to 211241121 its reverse (121142112), we get a palindrome (332383233).

Subtracting from 211241121 its reverse (121142112), we obtain a palindrome (90099009).

The spelling of 211241121 in words is "two hundred eleven million, two hundred forty-one thousand, one hundred twenty-one".