121698801361 has 8 divisors (see below), whose sum is σ = 122332325544. Its totient is φ = 121065436800.

The previous prime is 121698801293. The next prime is 121698801373. The reversal of 121698801361 is 163108896121.

It can be written as a sum of positive squares in 4 ways, for example, as 113960256400 + 7738544961 = 337580^2 + 87969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121698801361 - 2¹⁹ = 121698277073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121698801061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681011 + ... + 1751911.

It is an arithmetic number, because the mean of its divisors is an integer number (15291540693).

Almost surely, 2^121698801361 is an apocalyptic number.

It is an amenable number.

121698801361 is a deficient number, since it is larger than the sum of its proper divisors (633524183).

121698801361 is an equidigital number, since it uses as much as digits as its factorization.

121698801361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79811.

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 121698801361 in words is "one hundred twenty-one billion, six hundred ninety-eight million, eight hundred one thousand, three hundred sixty-one".