10202201111121 has 4 divisors (see below), whose sum is σ = 13602934814832. Its totient is φ = 6801467407412.

The previous prime is 10202201111117. The next prime is 10202201111129. The reversal of 10202201111121 is 12111110220201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10202201111121 - 2² = 10202201111117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202201111121.

It is not an unprimeable number, because it can be changed into a prime (10202201111129) 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, 1700366851851 + ... + 1700366851856.

It is an arithmetic number, because the mean of its divisors is an integer number (3400733703708).

Almost surely, 2^{10202201111121} is an apocalyptic number.

It is an amenable number.

10202201111121 is a deficient number, since it is larger than the sum of its proper divisors (3400733703711).

10202201111121 is an equidigital number, since it uses as much as digits as its factorization.

10202201111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400733703710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10202201111121 its reverse (12111110220201), we get a palindrome (22313311331322).

The spelling of 10202201111121 in words is "ten trillion, two hundred two billion, two hundred one million, one hundred eleven thousand, one hundred twenty-one".