10121111200001 has 4 divisors (see below), whose sum is σ = 10716470682372. Its totient is φ = 9525751717632.

The previous prime is 10121111199961. The next prime is 10121111200043. The reversal of 10121111200001 is 10000211112101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9419227493776 + 701883706225 = 3069076^2 + 837785^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121111200001 - 2²² = 10121107005697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121111200091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297679741160 + ... + 297679741193.

It is an arithmetic number, because the mean of its divisors is an integer number (2679117670593).

Almost surely, 2^{10121111200001} is an apocalyptic number.

It is an amenable number.

10121111200001 is a deficient number, since it is larger than the sum of its proper divisors (595359482371).

10121111200001 is an equidigital number, since it uses as much as digits as its factorization.

10121111200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595359482370.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121111200001 its reverse (10000211112101), we get a palindrome (20121322312102).

The spelling of 10121111200001 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, two hundred thousand, one".