10220101221 has 32 divisors (see below), whose sum is σ = 15665633280. Its totient is φ = 5865992000.

The previous prime is 10220101183. The next prime is 10220101249. The reversal of 10220101221 is 12210102201.

It is not a de Polignac number, because 10220101221 - 2⁷ = 10220101093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10220101197 and 10220101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220101271) 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, 10000 + ... + 143318.

It is an arithmetic number, because the mean of its divisors is an integer number (489551040).

Almost surely, 2^10220101221 is an apocalyptic number.

10220101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10220101221 is a deficient number, since it is larger than the sum of its proper divisors (5445532059).

10220101221 is a wasteful number, since it uses less digits than its factorization.

10220101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133457.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10220101221 its reverse (12210102201), we get a palindrome (22430203422).

The spelling of 10220101221 in words is "ten billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".