99012011221201 has 8 divisors (see below), whose sum is σ = 108640174867560. Its totient is φ = 89671255444992.

The previous prime is 99012011221199. The next prime is 99012011221217. The reversal of 99012011221201 is 10212211021099.

It can be written as a sum of positive squares in 4 ways, for example, as 17679300264976 + 81332710956225 = 4204676^2 + 9018465^2 .

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

It is not a de Polignac number, because 99012011221201 - 2¹ = 99012011221199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99012011221601) 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, 71851966816 + ... + 71851968193.

It is an arithmetic number, because the mean of its divisors is an integer number (13580021858445).

Almost surely, 2^{99012011221201} is an apocalyptic number.

It is an amenable number.

99012011221201 is a deficient number, since it is larger than the sum of its proper divisors (9628163646359).

99012011221201 is a wasteful number, since it uses less digits than its factorization.

99012011221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143703935075.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 99012011221201 in words is "ninety-nine trillion, twelve billion, eleven million, two hundred twenty-one thousand, two hundred one".