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12122122021210 = 251212212202121
BaseRepresentation
bin1011000001100110011011…
…0001101110100101011010
31120220212022112012120011001
42300121212301232211122
53042102101214134320
641440454224455214
72360536325036455
oct260314661564532
946825275176131
1012122122021210
113953a65948963
12143942217a50a
1369c15a4051b6
142dc9dcaa449c
151604ce33d20a
hexb0666c6e95a

12122122021210 has 8 divisors (see below), whose sum is σ = 21819819638196. Its totient is φ = 4848848808480.

The previous prime is 12122122021201. The next prime is 12122122021271. The reversal of 12122122021210 is 1212022122121.

12122122021210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10836322508449 + 1285799512761 = 3291857^2 + 1133931^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606106101051 + ... + 606106101070.

Almost surely, 212122122021210 is an apocalyptic number.

12122122021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122122021210 is a deficient number, since it is larger than the sum of its proper divisors (9697697616986).

12122122021210 is a wasteful number, since it uses less digits than its factorization.

12122122021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212212202128.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122122021210 its reverse (1212022122121), we get a palindrome (13334144143331).

The spelling of 12122122021210 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty-one thousand, two hundred ten".

Divisors: 1 2 5 10 1212212202121 2424424404242 6061061010605 12122122021210