18100121126 has 16 divisors (see below), whose sum is σ = 29063534400. Its totient is φ = 8428422888.

The previous prime is 18100121111. The next prime is 18100121141. The reversal of 18100121126 is 62112100181.

18100121126 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (18100121111) and next prime (18100121141).

It is a super-2 number, since 2×18100121126² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4034360 + ... + 4038843.

It is an arithmetic number, because the mean of its divisors is an integer number (1816470900).

Almost surely, 2^18100121126 is an apocalyptic number.

18100121126 is a deficient number, since it is larger than the sum of its proper divisors (10963413274).

18100121126 is a wasteful number, since it uses less digits than its factorization.

18100121126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073283.

The product of its (nonzero) digits is 192, while the sum is 23.

The spelling of 18100121126 in words is "eighteen billion, one hundred million, one hundred twenty-one thousand, one hundred twenty-six".