10111220202121 has 8 divisors (see below), whose sum is σ = 10415700338400. Its totient is φ = 9809495542560.

The previous prime is 10111220202079. The next prime is 10111220202221. The reversal of 10111220202121 is 12120202211101.

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 10111220202121 - 2³⁹ = 9561464388233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111220202095 and 10111220202104.

It is not an unprimeable number, because it can be changed into a prime (10111220202221) 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, 688861731 + ... + 688876408.

It is an arithmetic number, because the mean of its divisors is an integer number (1301962542300).

Almost surely, 2^{10111220202121} is an apocalyptic number.

It is an amenable number.

10111220202121 is a deficient number, since it is larger than the sum of its proper divisors (304480136279).

10111220202121 is a wasteful number, since it uses less digits than its factorization.

10111220202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377738359.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10111220202121 its reverse (12120202211101), we get a palindrome (22231422413222).

The spelling of 10111220202121 in words is "ten trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".