20212001111129 has 2 divisors, whose sum is σ = 20212001111130. Its totient is φ = 20212001111128.

The previous prime is 20212001111119. The next prime is 20212001111177. The reversal of 20212001111129 is 92111110021202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18778528896400 + 1433472214729 = 4333420^2 + 1197277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212001111129 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212001111119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106000555564 + 10106000555565.

It is an arithmetic number, because the mean of its divisors is an integer number (10106000555565).

Almost surely, 2^{20212001111129} is an apocalyptic number.

It is an amenable number.

20212001111129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212001111129 is an equidigital number, since it uses as much as digits as its factorization.

20212001111129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 20212001111129 in words is "twenty trillion, two hundred twelve billion, one million, one hundred eleven thousand, one hundred twenty-nine".