10022121221 has 16 divisors (see below), whose sum is σ = 11762610048. Its totient is φ = 8359872000.

The previous prime is 10022121169. The next prime is 10022121247. The reversal of 10022121221 is 12212122001.

It is a cyclic number.

It is not a de Polignac number, because 10022121221 - 2¹⁰ = 10022120197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10022121196 and 10022121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10022120221) 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, 71546 + ... + 158628.

It is an arithmetic number, because the mean of its divisors is an integer number (735163128).

Almost surely, 2^10022121221 is an apocalyptic number.

It is an amenable number.

10022121221 is a deficient number, since it is larger than the sum of its proper divisors (1740488827).

10022121221 is an equidigital number, since it uses as much as digits as its factorization.

10022121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87532.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10022121221 its reverse (12212122001), we get a palindrome (22234243222).

The spelling of 10022121221 in words is "ten billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".