123101121011 has 16 divisors (see below), whose sum is σ = 141386156160. Its totient is φ = 106000591680.

The previous prime is 123101120977. The next prime is 123101121041. The reversal of 123101121011 is 110121101321.

It is a cyclic number.

It is not a de Polignac number, because 123101121011 - 2¹⁴ = 123101104627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123101121041) 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 15 ways as a sum of consecutive naturals, for example, 1147700 + ... + 1250366.

It is an arithmetic number, because the mean of its divisors is an integer number (8836634760).

Almost surely, 2^123101121011 is an apocalyptic number.

123101121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123101121011 is a deficient number, since it is larger than the sum of its proper divisors (18285035149).

123101121011 is a wasteful number, since it uses less digits than its factorization.

123101121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108434.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 123101121011 its reverse (110121101321), we get a palindrome (233222222332).

The spelling of 123101121011 in words is "one hundred twenty-three billion, one hundred one million, one hundred twenty-one thousand, eleven".