1022211202221 has 48 divisors (see below), whose sum is σ = 1623514314240. Its totient is φ = 614629568160.

The previous prime is 1022211202217. The next prime is 1022211202231. The reversal of 1022211202221 is 1222021122201.

It is a happy number.

1022211202221 is a `hidden beast` number, since 10 + 22 + 211 + 202 + 221 = 666.

It is not a de Polignac number, because 1022211202221 - 2² = 1022211202217 is a prime.

It is a super-2 number, since 2×1022211202221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022211202194 and 1022211202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022211202231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8587650 + ... + 8705868.

It is an arithmetic number, because the mean of its divisors is an integer number (33823214880).

Almost surely, 2^{1022211202221} is an apocalyptic number.

1022211202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022211202221 is a deficient number, since it is larger than the sum of its proper divisors (601303112019).

1022211202221 is a wasteful number, since it uses less digits than its factorization.

1022211202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118926 (or 118923 counting only the distinct ones).

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

Adding to 1022211202221 its reverse (1222021122201), we get a palindrome (2244232324422).

The spelling of 1022211202221 in words is "one trillion, twenty-two billion, two hundred eleven million, two hundred two thousand, two hundred twenty-one".