10201202122221 has 56 divisors (see below), whose sum is σ = 16692846207456. Its totient is φ = 6179729617440.

The previous prime is 10201202122201. The next prime is 10201202122261. The reversal of 10201202122221 is 12222120210201.

It is a happy number.

10201202122221 is a `hidden beast` number, since 10 + 201 + 20 + 212 + 2 + 221 = 666.

It is not a de Polignac number, because 10201202122221 - 2⁹ = 10201202121709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201202122194 and 10201202122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201202122201) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 17377131 + ... + 17954583.

Almost surely, 2^{10201202122221} is an apocalyptic number.

10201202122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10201202122221 is a deficient number, since it is larger than the sum of its proper divisors (6491644085235).

10201202122221 is an equidigital number, since it uses as much as digits as its factorization.

10201202122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579685 (or 579670 counting only the distinct ones).

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

Adding to 10201202122221 its reverse (12222120210201), we get a palindrome (22423322332422).

The spelling of 10201202122221 in words is "ten trillion, two hundred one billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".