201222002102121 has 128 divisors (see below), whose sum is σ = 400640396083200. Its totient is φ = 96397189274880.

The previous prime is 201222002102113. The next prime is 201222002102179. The reversal of 201222002102121 is 121201200222102.

It is a happy number.

201222002102121 is a `hidden beast` number, since 20 + 1 + 2 + 220 + 0 + 210 + 212 + 1 = 666.

It is not a de Polignac number, because 201222002102121 - 2³ = 201222002102113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201222002102094 and 201222002102103.

It is not an unprimeable number, because it can be changed into a prime (201222002102221) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24498175 + ... + 31663931.

It is an arithmetic number, because the mean of its divisors is an integer number (3130003094400).

Almost surely, 2^{201222002102121} is an apocalyptic number.

201222002102121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201222002102121 is a deficient number, since it is larger than the sum of its proper divisors (199418393981079).

201222002102121 is a wasteful number, since it uses less digits than its factorization.

201222002102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166836 (or 7166830 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201222002102121 its reverse (121201200222102), we get a palindrome (322423202324223).

The spelling of 201222002102121 in words is "two hundred one trillion, two hundred twenty-two billion, two million, one hundred two thousand, one hundred twenty-one".