121120200012111 has 4 divisors (see below), whose sum is σ = 161493600016152. Its totient is φ = 80746800008072.

The previous prime is 121120200012101. The next prime is 121120200012143. The reversal of 121120200012111 is 111210002021121.

It is a happy number.

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 121120200012111 - 2¹⁵ = 121120199979343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120200012101) 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, 20186700002016 + ... + 20186700002021.

It is an arithmetic number, because the mean of its divisors is an integer number (40373400004038).

Almost surely, 2^{121120200012111} is an apocalyptic number.

121120200012111 is a deficient number, since it is larger than the sum of its proper divisors (40373400004041).

121120200012111 is an equidigital number, since it uses as much as digits as its factorization.

121120200012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40373400004040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121120200012111 its reverse (111210002021121), we get a palindrome (232330202033232).

The spelling of 121120200012111 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred million, twelve thousand, one hundred eleven".