2102202201977 has 2 divisors, whose sum is σ = 2102202201978. Its totient is φ = 2102202201976.

The previous prime is 2102202201947. The next prime is 2102202202019. The reversal of 2102202201977 is 7791022022012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1890141030976 + 212061171001 = 1374824^2 + 460501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102202201977 - 2¹² = 2102202197881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102202201947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051101100988 + 1051101100989.

It is an arithmetic number, because the mean of its divisors is an integer number (1051101100989).

Almost surely, 2^{2102202201977} is an apocalyptic number.

It is an amenable number.

2102202201977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102202201977 is an equidigital number, since it uses as much as digits as its factorization.

2102202201977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

Adding to 2102202201977 its reverse (7791022022012), we get a palindrome (9893224223989).

The spelling of 2102202201977 in words is "two trillion, one hundred two billion, two hundred two million, two hundred one thousand, nine hundred seventy-seven".