2101021222361 has 2 divisors, whose sum is σ = 2101021222362. Its totient is φ = 2101021222360.

The previous prime is 2101021222273. The next prime is 2101021222429. The reversal of 2101021222361 is 1632221201012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117631666761 + 983389555600 = 1057181^2 + 991660^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101021222361 - 2¹⁰ = 2101021221337 is a prime.

It is a super-2 number, since 2×2101021222361² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2101021222961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050510611180 + 1050510611181.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510611181).

Almost surely, 2^{2101021222361} is an apocalyptic number.

It is an amenable number.

2101021222361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101021222361 is an equidigital number, since it uses as much as digits as its factorization.

2101021222361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 2101021222361 its reverse (1632221201012), we get a palindrome (3733242423373).

The spelling of 2101021222361 in words is "two trillion, one hundred one billion, twenty-one million, two hundred twenty-two thousand, three hundred sixty-one".