1202112204661 has 2 divisors, whose sum is σ = 1202112204662. Its totient is φ = 1202112204660.

The previous prime is 1202112204649. The next prime is 1202112204673. The reversal of 1202112204661 is 1664022112021.

It is a balanced prime because it is at equal distance from previous prime (1202112204649) and next prime (1202112204673).

It can be written as a sum of positive squares in only one way, i.e., 902131437636 + 299980767025 = 949806^2 + 547705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202112204661 - 2²¹ = 1202110107509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202112204641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601056102330 + 601056102331.

It is an arithmetic number, because the mean of its divisors is an integer number (601056102331).

Almost surely, 2^{1202112204661} is an apocalyptic number.

It is an amenable number.

1202112204661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202112204661 is an equidigital number, since it uses as much as digits as its factorization.

1202112204661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 1202112204661 its reverse (1664022112021), we get a palindrome (2866134316682).

The spelling of 1202112204661 in words is "one trillion, two hundred two billion, one hundred twelve million, two hundred four thousand, six hundred sixty-one".