1202021113123 has 2 divisors, whose sum is σ = 1202021113124. Its totient is φ = 1202021113122.

The previous prime is 1202021113063. The next prime is 1202021113133. The reversal of 1202021113123 is 3213111202021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202021113123 - 2³³ = 1193431178531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202021113123.

It is not a weakly prime, because it can be changed into another prime (1202021113133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010556561 + 601010556562.

It is an arithmetic number, because the mean of its divisors is an integer number (601010556562).

Almost surely, 2^{1202021113123} is an apocalyptic number.

1202021113123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202021113123 is an equidigital number, since it uses as much as digits as its factorization.

1202021113123 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 19.

Adding to 1202021113123 its reverse (3213111202021), we get a palindrome (4415132315144).

The spelling of 1202021113123 in words is "one trillion, two hundred two billion, twenty-one million, one hundred thirteen thousand, one hundred twenty-three".