121011121011 has 64 divisors (see below), whose sum is σ = 188103144960. Its totient is φ = 68428800000.

The previous prime is 121011121003. The next prime is 121011121061. The reversal of 121011121011 is 110121110121.

It is not a de Polignac number, because 121011121011 - 2³ = 121011121003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121011121061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12217161 + ... + 12227061.

It is an arithmetic number, because the mean of its divisors is an integer number (2939111640).

Almost surely, 2^121011121011 is an apocalyptic number.

121011121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121011121011 is a deficient number, since it is larger than the sum of its proper divisors (67092023949).

121011121011 is a wasteful number, since it uses less digits than its factorization.

121011121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121011121011 its reverse (110121110121), we get a palindrome (231132231132).

The spelling of 121011121011 in words is "one hundred twenty-one billion, eleven million, one hundred twenty-one thousand, eleven".