11111112202129 has 2 divisors, whose sum is σ = 11111112202130. Its totient is φ = 11111112202128.

The previous prime is 11111112202027. The next prime is 11111112202133. The reversal of 11111112202129 is 92120221111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11085390457729 + 25721744400 = 3329473^2 + 160380^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111112202129 - 2²³ = 11111103813521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111112242129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555556101064 + 5555556101065.

It is an arithmetic number, because the mean of its divisors is an integer number (5555556101065).

Almost surely, 2^{11111112202129} is an apocalyptic number.

It is an amenable number.

11111112202129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111112202129 is an equidigital number, since it uses as much as digits as its factorization.

11111112202129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 11111112202129 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred two thousand, one hundred twenty-nine".