12110021929 has 2 divisors, whose sum is σ = 12110021930. Its totient is φ = 12110021928.

The previous prime is 12110021923. The next prime is 12110021947. The reversal of 12110021929 is 92912001121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6806250000 + 5303771929 = 82500^2 + 72827^2 .

It is an emirp because it is prime and its reverse (92912001121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12110021929 - 2¹³ = 12110013737 is a prime.

It is a super-2 number, since 2×12110021929² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12110021897 and 12110021906.

It is not a weakly prime, because it can be changed into another prime (12110021923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055010964 + 6055010965.

It is an arithmetic number, because the mean of its divisors is an integer number (6055010965).

Almost surely, 2^12110021929 is an apocalyptic number.

It is an amenable number.

12110021929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110021929 is an equidigital number, since it uses as much as digits as its factorization.

12110021929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 12110021929 in words is "twelve billion, one hundred ten million, twenty-one thousand, nine hundred twenty-nine".