22077133306661 has 2 divisors, whose sum is σ = 22077133306662. Its totient is φ = 22077133306660.

The previous prime is 22077133306639. The next prime is 22077133306699. The reversal of 22077133306661 is 16660333177022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20813723586436 + 1263409720225 = 4562206^2 + 1124015^2 .

It is a cyclic number.

It is not a de Polignac number, because 22077133306661 - 2¹⁰ = 22077133305637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22077133300661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11038566653330 + 11038566653331.

It is an arithmetic number, because the mean of its divisors is an integer number (11038566653331).

Almost surely, 2^{22077133306661} is an apocalyptic number.

It is an amenable number.

22077133306661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22077133306661 is an equidigital number, since it uses as much as digits as its factorization.

22077133306661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 22077133306661 in words is "twenty-two trillion, seventy-seven billion, one hundred thirty-three million, three hundred six thousand, six hundred sixty-one".