99011121201 has 10 divisors (see below), whose sum is σ = 147905502162. Its totient is φ = 66007414080.

The previous prime is 99011121191. The next prime is 99011121227. The reversal of 99011121201 is 10212111099.

It can be written as a sum of positive squares in only one way, i.e., 96438197025 + 2572924176 = 310545^2 + 50724^2 .

It is not a de Polignac number, because 99011121201 - 2²² = 99006926897 is a prime.

It is a super-2 number, since 2×99011121201² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99011121241) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 611179680 + ... + 611179841.

Almost surely, 2^99011121201 is an apocalyptic number.

It is an amenable number.

99011121201 is a deficient number, since it is larger than the sum of its proper divisors (48894380961).

99011121201 is a wasteful number, since it uses less digits than its factorization.

99011121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222359533 (or 1222359524 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 99011121201 in words is "ninety-nine billion, eleven million, one hundred twenty-one thousand, two hundred one".