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212221222012 = 2253055305503
BaseRepresentation
bin1100010110100101011…
…1101101110001111100
3202021210001200002101201
43011221113231301330
511434112113101022
6241254301145244
721222016423612
oct3055127556174
9667701602351
10212221222012
1182003390188
123516855b224
131702125b6a7
14a3b32476b2
1557c1342127
hex31695edc7c

212221222012 has 6 divisors (see below), whose sum is σ = 371387138528. Its totient is φ = 106110611004.

The previous prime is 212221222009. The next prime is 212221222027. The reversal of 212221222012 is 210222122212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26527652748 + ... + 26527652755.

Almost surely, 2212221222012 is an apocalyptic number.

It is an amenable number.

212221222012 is a deficient number, since it is larger than the sum of its proper divisors (159165916516).

212221222012 is a wasteful number, since it uses less digits than its factorization.

212221222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53055305507 (or 53055305505 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212221222012 its reverse (210222122212), we get a palindrome (422443344224).

The spelling of 212221222012 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, twelve".

Divisors: 1 2 4 53055305503 106110611006 212221222012