20121112121183 has 2 divisors, whose sum is σ = 20121112121184. Its totient is φ = 20121112121182.

The previous prime is 20121112121177. The next prime is 20121112121249. The reversal of 20121112121183 is 38112121112102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121112121183 - 2⁶ = 20121112121119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121112121153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060556060591 + 10060556060592.

It is an arithmetic number, because the mean of its divisors is an integer number (10060556060592).

Almost surely, 2^{20121112121183} is an apocalyptic number.

20121112121183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121112121183 is an equidigital number, since it uses as much as digits as its factorization.

20121112121183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 26.

Adding to 20121112121183 its reverse (38112121112102), we get a palindrome (58233233233285).

The spelling of 20121112121183 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred eighty-three".