121098862081 has 4 divisors (see below), whose sum is σ = 121125879472. Its totient is φ = 121071844692.

The previous prime is 121098862063. The next prime is 121098862111. The reversal of 121098862081 is 180268890121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180268890121 = 36979 ⋅4874899.

It is a cyclic number.

It is not a de Polignac number, because 121098862081 - 2²³ = 121090473473 is a prime.

It is a super-2 number, since 2×121098862081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121098862481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13501971 + ... + 13510936.

It is an arithmetic number, because the mean of its divisors is an integer number (30281469868).

Almost surely, 2^121098862081 is an apocalyptic number.

It is an amenable number.

121098862081 is a deficient number, since it is larger than the sum of its proper divisors (27017391).

121098862081 is an equidigital number, since it uses as much as digits as its factorization.

121098862081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27017390.

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 121098862081 in words is "one hundred twenty-one billion, ninety-eight million, eight hundred sixty-two thousand, eighty-one".