1121202021229 has 2 divisors, whose sum is σ = 1121202021230. Its totient is φ = 1121202021228.

The previous prime is 1121202021209. The next prime is 1121202021259. The reversal of 1121202021229 is 9221202021211.

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., 714655509129 + 406546512100 = 845373^2 + 637610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121202021229 - 2⁵ = 1121202021197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121202021209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560601010614 + 560601010615.

It is an arithmetic number, because the mean of its divisors is an integer number (560601010615).

Almost surely, 2^{1121202021229} is an apocalyptic number.

It is an amenable number.

1121202021229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121202021229 is an equidigital number, since it uses as much as digits as its factorization.

1121202021229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1121202021229 in words is "one trillion, one hundred twenty-one billion, two hundred two million, twenty-one thousand, two hundred twenty-nine".