121221132100011 has 12 divisors (see below), whose sum is σ = 175102244717400. Its totient is φ = 80811755494560.

The previous prime is 121221132100001. The next prime is 121221132100039. The reversal of 121221132100011 is 110001231122121.

It is a happy number.

121221132100011 is a `hidden beast` number, since 121 + 2 + 211 + 321 + 0 + 0 + 0 + 11 = 666.

It is not a de Polignac number, because 121221132100011 - 2¹³ = 121221132091819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121221132100001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194051845 + ... + 194675526.

It is an arithmetic number, because the mean of its divisors is an integer number (14591853726450).

Almost surely, 2^{121221132100011} is an apocalyptic number.

121221132100011 is a deficient number, since it is larger than the sum of its proper divisors (53881112617389).

121221132100011 is a wasteful number, since it uses less digits than its factorization.

121221132100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388762026 (or 388762023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121221132100011 its reverse (110001231122121), we get a palindrome (231222363222132).

The spelling of 121221132100011 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred thirty-two million, one hundred thousand, eleven".