211120200000121 has 4 divisors (see below), whose sum is σ = 211120303964544. Its totient is φ = 211120096035700.

The previous prime is 211120200000109. The next prime is 211120200000131. The reversal of 211120200000121 is 121000002021112.

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 211120200000121 - 2²¹ = 211120197902969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211120200000131) 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, 48874225 + ... + 53018206.

It is an arithmetic number, because the mean of its divisors is an integer number (52780075991136).

Almost surely, 2^{211120200000121} is an apocalyptic number.

It is an amenable number.

211120200000121 is a deficient number, since it is larger than the sum of its proper divisors (103964423).

211120200000121 is a wasteful number, since it uses less digits than its factorization.

211120200000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103964422.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211120200000121 its reverse (121000002021112), we get a palindrome (332120202021233).

The spelling of 211120200000121 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred million, one hundred twenty-one", and thus it is an aban number.