10021110001221 has 32 divisors (see below), whose sum is σ = 14590503480960. Its totient is φ = 6067425196800.

The previous prime is 10021110001213. The next prime is 10021110001241. The reversal of 10021110001221 is 12210001112001.

10021110001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10021110001221 - 2³ = 10021110001213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021110001197 and 10021110001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021110001241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311769811 + ... + 311801951.

It is an arithmetic number, because the mean of its divisors is an integer number (455953233780).

Almost surely, 2^{10021110001221} is an apocalyptic number.

10021110001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021110001221 is a deficient number, since it is larger than the sum of its proper divisors (4569393479739).

10021110001221 is a wasteful number, since it uses less digits than its factorization.

10021110001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41157.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021110001221 its reverse (12210001112001), we get a palindrome (22231111113222).

The spelling of 10021110001221 in words is "ten trillion, twenty-one billion, one hundred ten million, one thousand, two hundred twenty-one".