10021221212101 has 16 divisors (see below), whose sum is σ = 11180234361600. Its totient is φ = 8905823784000.

The previous prime is 10021221212099. The next prime is 10021221212129. The reversal of 10021221212101 is 10121212212001.

It is not a de Polignac number, because 10021221212101 - 2¹ = 10021221212099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021221212141) 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, 57000846 + ... + 57176383.

It is an arithmetic number, because the mean of its divisors is an integer number (698764647600).

Almost surely, 2^{10021221212101} is an apocalyptic number.

10021221212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021221212101 is a deficient number, since it is larger than the sum of its proper divisors (1159013149499).

10021221212101 is a wasteful number, since it uses less digits than its factorization.

10021221212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114177420.

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

Adding to 10021221212101 its reverse (10121212212001), we get a palindrome (20142433424102).

It can be divided in two parts, 10021 and 221212101, that added together give a palindrome (221222122).

The spelling of 10021221212101 in words is "ten trillion, twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".