10011112002121 has 8 divisors (see below), whose sum is σ = 10155707089704. Its totient is φ = 9866718443520.

The previous prime is 10011112002119. The next prime is 10011112002169. The reversal of 10011112002121 is 12120021111001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 285610000 + 10010826392121 = 16900^2 + 3163989^2 .

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 10011112002121 - 2¹ = 10011112002119 is a prime.

It is a super-2 number, since 2×10011112002121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10011112002421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50282176 + ... + 50480881.

It is an arithmetic number, because the mean of its divisors is an integer number (1269463386213).

Almost surely, 2^{10011112002121} is an apocalyptic number.

It is an amenable number.

10011112002121 is a deficient number, since it is larger than the sum of its proper divisors (144595087583).

10011112002121 is a wasteful number, since it uses less digits than its factorization.

10011112002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100764491.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10011112002121 its reverse (12120021111001), we get a palindrome (22131133113122).

The spelling of 10011112002121 in words is "ten trillion, eleven billion, one hundred twelve million, two thousand, one hundred twenty-one".