102011121011 has 4 divisors (see below), whose sum is σ = 107380127400. Its totient is φ = 96642114624.

The previous prime is 102011120989. The next prime is 102011121029. The reversal of 102011121011 is 110121110201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102011121011 - 2³⁰ = 100937379187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011120983 and 102011121001.

It is not an unprimeable number, because it can be changed into a prime (102011121911) 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 3 ways as a sum of consecutive naturals, for example, 2684503166 + ... + 2684503203.

It is an arithmetic number, because the mean of its divisors is an integer number (26845031850).

Almost surely, 2^102011121011 is an apocalyptic number.

102011121011 is a deficient number, since it is larger than the sum of its proper divisors (5369006389).

102011121011 is an equidigital number, since it uses as much as digits as its factorization.

102011121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369006388.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 102011121011 its reverse (110121110201), we get a palindrome (212132231212).

The spelling of 102011121011 in words is "one hundred two billion, eleven million, one hundred twenty-one thousand, eleven".