121000001021011 has 64 divisors (see below), whose sum is σ = 157645560960000. Its totient is φ = 92256203128320.

The previous prime is 121000001020979. The next prime is 121000001021027. The reversal of 121000001021011 is 110120100000121.

It is not a de Polignac number, because 121000001021011 - 2⁵ = 121000001020979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000001021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45345060 + ... + 47939278.

It is an arithmetic number, because the mean of its divisors is an integer number (2463211890000).

Almost surely, 2^{121000001021011} is an apocalyptic number.

121000001021011 is a deficient number, since it is larger than the sum of its proper divisors (36645559938989).

121000001021011 is a wasteful number, since it uses less digits than its factorization.

121000001021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594697 (or 2594683 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121000001021011 its reverse (110120100000121), we get a palindrome (231120101021132).

The spelling of 121000001021011 in words is "one hundred twenty-one trillion, one million, twenty-one thousand, eleven".