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121100011121 = 233519742537
BaseRepresentation
bin111000011001000011…
…1111000011001110001
3102120120200000222002002
41300302013320121301
53441003100323441
6131344345303345
711514654052625
oct1606207703161
9376520028062
10121100011121
11473a3887821
121b578194b55
13b55c07011b
145c0b489185
15323b83eb9b
hex1c321f8671

121100011121 has 4 divisors (see below), whose sum is σ = 121619753892. Its totient is φ = 120580268352.

The previous prime is 121100011117. The next prime is 121100011129. The reversal of 121100011121 is 121110001121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44379320896 + 76720690225 = 210664^2 + 276985^2 .

It is a cyclic number.

It is not a de Polignac number, because 121100011121 - 22 = 121100011117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121100011129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259871036 + ... + 259871501.

It is an arithmetic number, because the mean of its divisors is an integer number (30404938473).

Almost surely, 2121100011121 is an apocalyptic number.

It is an amenable number.

121100011121 is a deficient number, since it is larger than the sum of its proper divisors (519742771).

121100011121 is an equidigital number, since it uses as much as digits as its factorization.

121100011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519742770.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121100011121 its reverse (121110001121), we get a palindrome (242210012242).

The spelling of 121100011121 in words is "one hundred twenty-one billion, one hundred million, eleven thousand, one hundred twenty-one".

Divisors: 1 233 519742537 121100011121