121011022011 has 24 divisors (see below), whose sum is σ = 178746007552. Its totient is φ = 72762505200.

The previous prime is 121011022007. The next prime is 121011022049. The reversal of 121011022011 is 110220110121.

It is not a de Polignac number, because 121011022011 - 2² = 121011022007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011022051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1266355 + ... + 1358556.

Almost surely, 2^121011022011 is an apocalyptic number.

121011022011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121011022011 is a deficient number, since it is larger than the sum of its proper divisors (57734985541).

121011022011 is a wasteful number, since it uses less digits than its factorization.

121011022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625063 (or 2625052 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121011022011 its reverse (110220110121), we get a palindrome (231231132132).

The spelling of 121011022011 in words is "one hundred twenty-one billion, eleven million, twenty-two thousand, eleven".