221022012212122 has 16 divisors (see below), whose sum is σ = 367070478900192. Its totient is φ = 98965080094320.

The previous prime is 221022012212107. The next prime is 221022012212143. The reversal of 221022012212122 is 221212210220122.

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 = 221022012212093 and 221022012212102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74973544053 + ... + 74973547000.

It is an arithmetic number, because the mean of its divisors is an integer number (22941904931262).

Almost surely, 2^{221022012212122} is an apocalyptic number.

221022012212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221022012212122 is a deficient number, since it is larger than the sum of its proper divisors (146048466688070).

221022012212122 is a wasteful number, since it uses less digits than its factorization.

221022012212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149947091133.

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

Adding to 221022012212122 its reverse (221212210220122), we get a palindrome (442234222432244).

The spelling of 221022012212122 in words is "two hundred twenty-one trillion, twenty-two billion, twelve million, two hundred twelve thousand, one hundred twenty-two".