121201022100011 has 24 divisors (see below), whose sum is σ = 142285825598976. Its totient is φ = 102933143349120.

The previous prime is 121201022099957. The next prime is 121201022100023. The reversal of 121201022100011 is 110001220102121.

It is a de Polignac number, because none of the positive numbers 2^k-121201022100011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201022100071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8060816 + ... + 17532221.

It is an arithmetic number, because the mean of its divisors is an integer number (5928576066624).

Almost surely, 2^{121201022100011} is an apocalyptic number.

121201022100011 is a deficient number, since it is larger than the sum of its proper divisors (21084803498965).

121201022100011 is a wasteful number, since it uses less digits than its factorization.

121201022100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593939 (or 25593932 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121201022100011 its reverse (110001220102121), we get a palindrome (231202242202132).

The spelling of 121201022100011 in words is "one hundred twenty-one trillion, two hundred one billion, twenty-two million, one hundred thousand, eleven".