2121122201747 has 2 divisors, whose sum is σ = 2121122201748. Its totient is φ = 2121122201746.

The previous prime is 2121122201719. The next prime is 2121122201767. The reversal of 2121122201747 is 7471022211212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121122201747 - 2¹⁰ = 2121122200723 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121122201707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060561100873 + 1060561100874.

It is an arithmetic number, because the mean of its divisors is an integer number (1060561100874).

Almost surely, 2^{2121122201747} is an apocalyptic number.

2121122201747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121122201747 is an equidigital number, since it uses as much as digits as its factorization.

2121122201747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 32.

Adding to 2121122201747 its reverse (7471022211212), we get a palindrome (9592144412959).

The spelling of 2121122201747 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred one thousand, seven hundred forty-seven".