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12112100207210 = 253139071290991
BaseRepresentation
bin1011000001000001000101…
…1011100010101001101010
31120212220110002101122211202
42300100101123202221222
53041421040123112320
641432115542324202
72360033064032033
oct260202133425152
946786402348752
1012112100207210
11394a792894753
1214374a5a29662
1369b22104aa43
142dc32baa3a8a
151600e45c1b75
hexb04116e2a6a

12112100207210 has 16 divisors (see below), whose sum is σ = 22505063611392. Its totient is φ = 4688554918800.

The previous prime is 12112100207189. The next prime is 12112100207219. The reversal of 12112100207210 is 1270200121121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12112100207219) 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, 19535645186 + ... + 19535645805.

It is an arithmetic number, because the mean of its divisors is an integer number (1406566475712).

Almost surely, 212112100207210 is an apocalyptic number.

12112100207210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12112100207210 is a deficient number, since it is larger than the sum of its proper divisors (10392963404182).

12112100207210 is a wasteful number, since it uses less digits than its factorization.

12112100207210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39071291029.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 12112100207210 its reverse (1270200121121), we get a palindrome (13382300328331).

The spelling of 12112100207210 in words is "twelve trillion, one hundred twelve billion, one hundred million, two hundred seven thousand, two hundred ten".

Divisors: 1 2 5 10 31 62 155 310 39071290991 78142581982 195356454955 390712909910 1211210020721 2422420041442 6056050103605 12112100207210