29997465390121 has 2 divisors, whose sum is σ = 29997465390122. Its totient is φ = 29997465390120.

The previous prime is 29997465390071. The next prime is 29997465390199. The reversal of 29997465390121 is 12109356479992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29625584957721 + 371880432400 = 5442939^2 + 609820^2 .

It is a cyclic number.

It is not a de Polignac number, because 29997465390121 - 2⁹ = 29997465389609 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997465310121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998732695060 + 14998732695061.

It is an arithmetic number, because the mean of its divisors is an integer number (14998732695061).

Almost surely, 2^{29997465390121} is an apocalyptic number.

It is an amenable number.

29997465390121 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997465390121 is an equidigital number, since it uses as much as digits as its factorization.

29997465390121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66134880, while the sum is 67.

The spelling of 29997465390121 in words is "twenty-nine trillion, nine hundred ninety-seven billion, four hundred sixty-five million, three hundred ninety thousand, one hundred twenty-one".