10220001111221 has 12 divisors (see below), whose sum is σ = 11494800410016. Its totient is φ = 9074842419720.

The previous prime is 10220001111217. The next prime is 10220001111227. The reversal of 10220001111221 is 12211110002201.

It is not a de Polignac number, because 10220001111221 - 2² = 10220001111217 is a prime.

It is a super-2 number, since 2×10220001111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10220001111196 and 10220001111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220001111227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 982120601 + ... + 982131006.

It is an arithmetic number, because the mean of its divisors is an integer number (957900034168).

Almost surely, 2^{10220001111221} is an apocalyptic number.

10220001111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10220001111221 is a deficient number, since it is larger than the sum of its proper divisors (1274799298795).

10220001111221 is a wasteful number, since it uses less digits than its factorization.

10220001111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964251672 (or 1964251661 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10220001111221 its reverse (12211110002201), we get a palindrome (22431111113422).

The spelling of 10220001111221 in words is "ten trillion, two hundred twenty billion, one million, one hundred eleven thousand, two hundred twenty-one".