1202111129 has 2 divisors, whose sum is σ = 1202111130. Its totient is φ = 1202111128.

The previous prime is 1202111117. The next prime is 1202111137. The reversal of 1202111129 is 9211112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199929600 + 2181529 = 34640^2 + 1477^2 .

It is an emirp because it is prime and its reverse (9211112021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202111129 - 2²⁴ = 1185333913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202111129.

It is not a weakly prime, because it can be changed into another prime (1202111189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055564 + 601055565.

It is an arithmetic number, because the mean of its divisors is an integer number (601055565).

Almost surely, 2^1202111129 is an apocalyptic number.

It is an amenable number.

1202111129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202111129 is an equidigital number, since it uses as much as digits as its factorization.

1202111129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1202111129 is about 34671.4742836240. The cubic root of 1202111129 is about 1063.2813733538.

The spelling of 1202111129 in words is "one billion, two hundred two million, one hundred eleven thousand, one hundred twenty-nine".