221210022012122 has 16 divisors (see below), whose sum is σ = 389824654175712. Its totient is φ = 92815393851120.

The previous prime is 221210022012121. The next prime is 221210022012131. The reversal of 221210022012122 is 221210220012122.

It is a junction number, because it is equal to n+sod(n) for n = 221210022012094 and 221210022012103.

It is not an unprimeable number, because it can be changed into a prime (221210022012121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386730807428 + ... + 386730807999.

It is an arithmetic number, because the mean of its divisors is an integer number (24364040885982).

Almost surely, 2^{221210022012122} is an apocalyptic number.

221210022012122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221210022012122 is a deficient number, since it is larger than the sum of its proper divisors (168614632163590).

221210022012122 is a wasteful number, since it uses less digits than its factorization.

221210022012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773461615453.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221210022012122 its reverse (221210220012122), we get a palindrome (442420242024244).

The spelling of 221210022012122 in words is "two hundred twenty-one trillion, two hundred ten billion, twenty-two million, twelve thousand, one hundred twenty-two".