201222122121121 has 8 divisors (see below), whose sum is σ = 205992218432000. Its totient is φ = 196499489455440.

The previous prime is 201222122121103. The next prime is 201222122121127. The reversal of 201222122121121 is 121121221222102.

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

It is a cyclic number.

It is not a de Polignac number, because 201222122121121 - 2¹³ = 201222122112929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201222122121092 and 201222122121101.

It is not an unprimeable number, because it can be changed into a prime (201222122121127) 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, 11865902721 + ... + 11865919678.

It is an arithmetic number, because the mean of its divisors is an integer number (25749027304000).

Almost surely, 2^{201222122121121} is an apocalyptic number.

It is an amenable number.

201222122121121 is a deficient number, since it is larger than the sum of its proper divisors (4770096310879).

201222122121121 is a wasteful number, since it uses less digits than its factorization.

201222122121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23731822599.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 201222122121121 its reverse (121121221222102), we get a palindrome (322343343343223).

The spelling of 201222122121121 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".