121006644091205 has 8 divisors (see below), whose sum is σ = 147588431482104. Its totient is φ = 95218342891200.

The previous prime is 121006644091147. The next prime is 121006644091231. The reversal of 121006644091205 is 502190446600121.

It is a Cunningham number, because it is equal to 11000302²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 121006644091204 = 1^2 + 11000302^2 .

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

It is not a de Polignac number, because 121006644091205 - 2⁸ = 121006644090949 is a prime.

It is a super-3 number, since 3×121006644091205³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198371547386 + ... + 198371547995.

It is an arithmetic number, because the mean of its divisors is an integer number (18448553935263).

Almost surely, 2^{121006644091205} is an apocalyptic number.

It is an amenable number.

121006644091205 is a deficient number, since it is larger than the sum of its proper divisors (26581787390899).

121006644091205 is an equidigital number, since it uses as much as digits as its factorization.

121006644091205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396743095447.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 121006644091205 in words is "one hundred twenty-one trillion, six billion, six hundred forty-four million, ninety-one thousand, two hundred five".