211011120121 has 4 divisors (see below), whose sum is σ = 220185516672. Its totient is φ = 201836723572.

The previous prime is 211011120107. The next prime is 211011120143. The reversal of 211011120121 is 121021110112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211011120121 - 2¹³ = 211011111929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211011120191) 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, 4587198241 + ... + 4587198286.

It is an arithmetic number, because the mean of its divisors is an integer number (55046379168).

Almost surely, 2^211011120121 is an apocalyptic number.

It is an amenable number.

211011120121 is a deficient number, since it is larger than the sum of its proper divisors (9174396551).

211011120121 is an equidigital number, since it uses as much as digits as its factorization.

211011120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174396550.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211011120121 its reverse (121021110112), we get a palindrome (332032230233).

The spelling of 211011120121 in words is "two hundred eleven billion, eleven million, one hundred twenty thousand, one hundred twenty-one".