10221202201221 has 48 divisors (see below), whose sum is σ = 16120096312320. Its totient is φ = 6189301560960.

The previous prime is 10221202201103. The next prime is 10221202201247. The reversal of 10221202201221 is 12210220212201.

It is a happy number.

10221202201221 is a `hidden beast` number, since 1 + 0 + 221 + 2 + 0 + 220 + 1 + 221 = 666.

It is not a de Polignac number, because 10221202201221 - 2²² = 10221198006917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10221202201194 and 10221202201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221202201421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611929756 + ... + 611946458.

It is an arithmetic number, because the mean of its divisors is an integer number (335835339840).

Almost surely, 2^{10221202201221} is an apocalyptic number.

10221202201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10221202201221 is a deficient number, since it is larger than the sum of its proper divisors (5898894111099).

10221202201221 is a wasteful number, since it uses less digits than its factorization.

10221202201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21706 (or 21703 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10221202201221 its reverse (12210220212201), we get a palindrome (22431422413422).

The spelling of 10221202201221 in words is "ten trillion, two hundred twenty-one billion, two hundred two million, two hundred one thousand, two hundred twenty-one".