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22101122121 = 3133371168109
BaseRepresentation
bin10100100101010101…
…000101110001001001
32010001021011022221120
4110211111011301021
5330230341401441
614053023425453
71411454303241
oct244525056111
963037138846
1022101122121
119411564191
124349755289
132112a99470
1410d9384b21
15895455966
hex525545c49

22101122121 has 16 divisors (see below), whose sum is σ = 31744547520. Its totient is φ = 13596575040.

The previous prime is 22101122117. The next prime is 22101122137. The reversal of 22101122121 is 12122110122.

It is not a de Polignac number, because 22101122121 - 22 = 22101122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22101122121.

It is not an unprimeable number, because it can be changed into a prime (22101122321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47415 + ... + 215523.

It is an arithmetic number, because the mean of its divisors is an integer number (1984034220).

Almost surely, 222101122121 is an apocalyptic number.

It is an amenable number.

22101122121 is a deficient number, since it is larger than the sum of its proper divisors (9643425399).

22101122121 is a wasteful number, since it uses less digits than its factorization.

22101122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171496.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22101122121 its reverse (12122110122), we get a palindrome (34223232243).

The spelling of 22101122121 in words is "twenty-two billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-one".