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121113031220123 = 1989166343068031
BaseRepresentation
bin11011100010011011010011…
…001101000001101110011011
3120212211021220101101101002112
4123202123103031001232123
5111333303441443020443
61105330320342422535
734340061550356125
oct3342332315015633
9525737811341075
10121113031220123
1135654825793808
1211700625131a4b
135276ba9bb8087
1421c9c8b0ac215
15e00664173b18
hex6e26d3341b9b

121113031220123 has 16 divisors (see below), whose sum is σ = 128997369446400. Its totient is φ = 113381240322240.

The previous prime is 121113031220053. The next prime is 121113031220141. The reversal of 121113031220123 is 321022130311121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121113031220123 - 212 = 121113031216027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121113031220183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18721883 + ... + 24346148.

It is an arithmetic number, because the mean of its divisors is an integer number (8062335590400).

Almost surely, 2121113031220123 is an apocalyptic number.

121113031220123 is a deficient number, since it is larger than the sum of its proper divisors (7884338226277).

121113031220123 is a wasteful number, since it uses less digits than its factorization.

121113031220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43069802.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121113031220123 its reverse (321022130311121), we get a palindrome (442135161531244).

The spelling of 121113031220123 in words is "one hundred twenty-one trillion, one hundred thirteen billion, thirty-one million, two hundred twenty thousand, one hundred twenty-three".

Divisors: 1 19 89 1663 1691 31597 148007 2812133 43068031 818292589 3833054759 71622135553 72828040421 1360820575507 6374370064217 121113031220123