10011111002121 has 16 divisors (see below), whose sum is σ = 14051973098240. Its totient is φ = 6322226003280.

The previous prime is 10011111002117. The next prime is 10011111002131. The reversal of 10011111002121 is 12120011111001.

It is not a de Polignac number, because 10011111002121 - 2² = 10011111002117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10011111002097 and 10011111002106.

It is not an unprimeable number, because it can be changed into a prime (10011111002131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7442455 + ... + 8684028.

It is an arithmetic number, because the mean of its divisors is an integer number (878248318640).

Almost surely, 2^{10011111002121} is an apocalyptic number.

It is an amenable number.

10011111002121 is a deficient number, since it is larger than the sum of its proper divisors (4040862096119).

10011111002121 is a wasteful number, since it uses less digits than its factorization.

10011111002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137396.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 10011111002121 its reverse (12120011111001), we get a palindrome (22131122113122).

The spelling of 10011111002121 in words is "ten trillion, eleven billion, one hundred eleven million, two thousand, one hundred twenty-one".