121201121102011 has 32 divisors (see below), whose sum is σ = 133998955776000. Its totient is φ = 109039698256896.

The previous prime is 121201121101997. The next prime is 121201121102021. The reversal of 121201121102011 is 110201121102121.

It is not a de Polignac number, because 121201121102011 - 2⁷ = 121201121101883 is a prime.

It is a super-2 number, since 2×121201121102011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201121102021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8337415935 + ... + 8337430471.

It is an arithmetic number, because the mean of its divisors is an integer number (4187467368000).

Almost surely, 2^{121201121102011} is an apocalyptic number.

121201121102011 is a deficient number, since it is larger than the sum of its proper divisors (12797834673989).

121201121102011 is a wasteful number, since it uses less digits than its factorization.

121201121102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27243.

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

Adding to 121201121102011 its reverse (110201121102121), we get a palindrome (231402242204132).

The spelling of 121201121102011 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twenty-one million, one hundred two thousand, eleven".