221202211022122 has 16 divisors (see below), whose sum is σ = 373643617446144. Its totient is φ = 97303025376000.

The previous prime is 221202211022101. The next prime is 221202211022147. The reversal of 221202211022122 is 221220112202122.

It is a super-2 number, since 2×221202211022122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221202211022093 and 221202211022102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162171708279 + ... + 162171709642.

It is an arithmetic number, because the mean of its divisors is an integer number (23352726090384).

Almost surely, 2^{221202211022122} is an apocalyptic number.

221202211022122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221202211022122 is a deficient number, since it is larger than the sum of its proper divisors (152441406424022).

221202211022122 is a wasteful number, since it uses less digits than its factorization.

221202211022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324343417965.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221202211022122 its reverse (221220112202122), we get a palindrome (442422323224244).

The spelling of 221202211022122 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred eleven million, twenty-two thousand, one hundred twenty-two".