354636712121 has 2 divisors, whose sum is σ = 354636712122. Its totient is φ = 354636712120.

The previous prime is 354636712097. The next prime is 354636712181. The reversal of 354636712121 is 121217636453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352954810000 + 1681902121 = 594100^2 + 41011^2 .

It is a cyclic number.

It is not a de Polignac number, because 354636712121 - 2⁶ = 354636712057 is a prime.

It is not a weakly prime, because it can be changed into another prime (354636712181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177318356060 + 177318356061.

It is an arithmetic number, because the mean of its divisors is an integer number (177318356061).

Almost surely, 2^354636712121 is an apocalyptic number.

It is an amenable number.

354636712121 is a deficient number, since it is larger than the sum of its proper divisors (1).

354636712121 is an equidigital number, since it uses as much as digits as its factorization.

354636712121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The spelling of 354636712121 in words is "three hundred fifty-four billion, six hundred thirty-six million, seven hundred twelve thousand, one hundred twenty-one".