1356545022121 has 2 divisors, whose sum is σ = 1356545022122. Its totient is φ = 1356545022120.

The previous prime is 1356545022101. The next prime is 1356545022197. The reversal of 1356545022121 is 1212205456531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1111044591721 + 245500430400 = 1054061^2 + 495480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356545022121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356545022101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678272511060 + 678272511061.

It is an arithmetic number, because the mean of its divisors is an integer number (678272511061).

Almost surely, 2^{1356545022121} is an apocalyptic number.

It is an amenable number.

1356545022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356545022121 is an equidigital number, since it uses as much as digits as its factorization.

1356545022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 1356545022121 in words is "one trillion, three hundred fifty-six billion, five hundred forty-five million, twenty-two thousand, one hundred twenty-one".