2120001194677 has 2 divisors, whose sum is σ = 2120001194678. Its totient is φ = 2120001194676.

The previous prime is 2120001194629. The next prime is 2120001194687. The reversal of 2120001194677 is 7764911000212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2091801045636 + 28200149041 = 1446306^2 + 167929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120001194677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120001194687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060000597338 + 1060000597339.

It is an arithmetic number, because the mean of its divisors is an integer number (1060000597339).

Almost surely, 2^{2120001194677} is an apocalyptic number.

It is an amenable number.

2120001194677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120001194677 is an equidigital number, since it uses as much as digits as its factorization.

2120001194677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

Adding to 2120001194677 its reverse (7764911000212), we get a palindrome (9884912194889).

The spelling of 2120001194677 in words is "two trillion, one hundred twenty billion, one million, one hundred ninety-four thousand, six hundred seventy-seven".