12020021211929 has 2 divisors, whose sum is σ = 12020021211930. Its totient is φ = 12020021211928.

The previous prime is 12020021211923. The next prime is 12020021211931. The reversal of 12020021211929 is 92911212002021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10970271379600 + 1049749832329 = 3312140^2 + 1024573^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020021211929 - 2³² = 12015726244633 is a prime.

Together with 12020021211931, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020021211895 and 12020021211904.

It is not a weakly prime, because it can be changed into another prime (12020021211923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010010605964 + 6010010605965.

It is an arithmetic number, because the mean of its divisors is an integer number (6010010605965).

Almost surely, 2^{12020021211929} is an apocalyptic number.

It is an amenable number.

12020021211929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020021211929 is an equidigital number, since it uses as much as digits as its factorization.

12020021211929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 12020021211929 in words is "twelve trillion, twenty billion, twenty-one million, two hundred eleven thousand, nine hundred twenty-nine".