10111352001221 has 16 divisors (see below), whose sum is σ = 10305612979200. Its totient is φ = 9919056726768.

The previous prime is 10111352001217. The next prime is 10111352001241. The reversal of 10111352001221 is 12210025311101.

It is a cyclic number.

It is not a de Polignac number, because 10111352001221 - 2² = 10111352001217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111352001193 and 10111352001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111352001241) 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, 6148970 + ... + 7617908.

It is an arithmetic number, because the mean of its divisors is an integer number (644100811200).

Almost surely, 2^{10111352001221} is an apocalyptic number.

It is an amenable number.

10111352001221 is a deficient number, since it is larger than the sum of its proper divisors (194260977979).

10111352001221 is a wasteful number, since it uses less digits than its factorization.

10111352001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469608.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 10111352001221 its reverse (12210025311101), we get a palindrome (22321377312322).

The spelling of 10111352001221 in words is "ten trillion, one hundred eleven billion, three hundred fifty-two million, one thousand, two hundred twenty-one".