10001202222121 has 16 divisors (see below), whose sum is σ = 10984839523200. Its totient is φ = 9030165264000.

The previous prime is 10001202222101. The next prime is 10001202222133. The reversal of 10001202222121 is 12122220210001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10001202222121 - 2⁷ = 10001202221993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001202222095 and 10001202222104.

It is not an unprimeable number, because it can be changed into a prime (10001202222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3823405 + ... + 5883946.

It is an arithmetic number, because the mean of its divisors is an integer number (686552470200).

Almost surely, 2^{10001202222121} is an apocalyptic number.

10001202222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001202222121 is a deficient number, since it is larger than the sum of its proper divisors (983637301079).

10001202222121 is a wasteful number, since it uses less digits than its factorization.

10001202222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708000.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10001202222121 its reverse (12122220210001), we get a palindrome (22123422432122).

The spelling of 10001202222121 in words is "ten trillion, one billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-one".