201221120022122 has 8 divisors (see below), whose sum is σ = 303830565331872. Its totient is φ = 99944264911500.

The previous prime is 201221120022077. The next prime is 201221120022127. The reversal of 201221120022122 is 221220021122102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 201221120022094 and 201221120022103.

It is not an unprimeable number, because it can be changed into a prime (201221120022127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333147549404 + ... + 333147550007.

It is an arithmetic number, because the mean of its divisors is an integer number (37978820666484).

Almost surely, 2^{201221120022122} is an apocalyptic number.

201221120022122 is a deficient number, since it is larger than the sum of its proper divisors (102609445309750).

201221120022122 is a wasteful number, since it uses less digits than its factorization.

201221120022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666295099564.

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

Adding to 201221120022122 its reverse (221220021122102), we get a palindrome (422441141144224).

The spelling of 201221120022122 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty million, twenty-two thousand, one hundred twenty-two".