121021011002111 has 16 divisors (see below), whose sum is σ = 132899331264000. Its totient is φ = 109289434446720.

The previous prime is 121021011002077. The next prime is 121021011002123. The reversal of 121021011002111 is 111200110120121.

It is a de Polignac number, because none of the positive numbers 2^k-121021011002111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021011002911) 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, 13298330 + ... + 20466743.

It is an arithmetic number, because the mean of its divisors is an integer number (8306208204000).

Almost surely, 2^{121021011002111} is an apocalyptic number.

121021011002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121021011002111 is a deficient number, since it is larger than the sum of its proper divisors (11878320261889).

121021011002111 is a wasteful number, since it uses less digits than its factorization.

121021011002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33767246.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121021011002111 its reverse (111200110120121), we get a palindrome (232221121122232).

The spelling of 121021011002111 in words is "one hundred twenty-one trillion, twenty-one billion, eleven million, two thousand, one hundred eleven".