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21122110210 = 257164146411
BaseRepresentation
bin10011101010111110…
…011101001100000010
32000112000222101002011
4103222332131030002
5321224230011320
613411532043134
71345265655145
oct235276351402
960460871064
1021122110210
118a59976033
1241159034aa
131cb7cca386
14104533c05c
1583951d05a
hex4eaf9d302

21122110210 has 32 divisors (see below), whose sum is σ = 38616269184. Its totient is φ = 8316672000.

The previous prime is 21122110199. The next prime is 21122110277. The reversal of 21122110210 is 1201122112.

It is a super-2 number, since 2×211221102102 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431905 + ... + 478315.

It is an arithmetic number, because the mean of its divisors is an integer number (1206758412).

Almost surely, 221122110210 is an apocalyptic number.

21122110210 is a deficient number, since it is larger than the sum of its proper divisors (17494158974).

21122110210 is a wasteful number, since it uses less digits than its factorization.

21122110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47130.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122110210 its reverse (1201122112), we get a palindrome (22323232322).

The spelling of 21122110210 in words is "twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred ten".

Divisors: 1 2 5 10 71 142 355 641 710 1282 3205 6410 45511 46411 91022 92822 227555 232055 455110 464110 3295181 6590362 16475905 29749451 32951810 59498902 148747255 297494510 2112211021 4224422042 10561055105 21122110210