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23121122101 = 71110115591907
BaseRepresentation
bin10101100010001000…
…000101001100110101
32012200100110200212121
4111202020011030311
5334323001401401
614342141515541
71445651203150
oct254210051465
965610420777
1023121122101
1198952a8280
124593272bb1
1322461b9a4c
141194a1ac97
15904c87ca1
hex562205335

23121122101 has 32 divisors (see below), whose sum is σ = 29145692160. Its totient is φ = 17817288000.

The previous prime is 23121122099. The next prime is 23121122107. The reversal of 23121122101 is 10122112132.

It is a cyclic number.

It is not a de Polignac number, because 23121122101 - 21 = 23121122099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121122107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12123390 + ... + 12125296.

It is an arithmetic number, because the mean of its divisors is an integer number (910802880).

Almost surely, 223121122101 is an apocalyptic number.

It is an amenable number.

23121122101 is a deficient number, since it is larger than the sum of its proper divisors (6024570059).

23121122101 is a wasteful number, since it uses less digits than its factorization.

23121122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 23121122101 its reverse (10122112132), we get a palindrome (33243234233).

The spelling of 23121122101 in words is "twenty-three billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred one".

Divisors: 1 7 11 77 101 707 1111 1559 1907 7777 10913 13349 17149 20977 120043 146839 157459 192607 1102213 1348249 1732049 2118677 2973013 12124343 14830739 20811091 32703143 228922001 300274313 2101920191 3303017443 23121122101