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BaseRepresentation
bin1100010010110111000…
…0001011011100011100
3202012012100120122111112
43010231300023130130
511430040034031022
6241011131041152
721155152615406
oct3045560133434
9665170518445
10211221002012
118163a827089
1234b295a01b8
1316bc1c75337
14a31a47db76
15576361a8e2
hex312dc0b71c

211221002012 has 24 divisors (see below), whose sum is σ = 382445854560. Its totient is φ = 101951958080.

The previous prime is 211221001993. The next prime is 211221002039. The reversal of 211221002012 is 210200122112.

It is a super-2 number, since 2×2112210020122 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571937 + ... + 865767.

It is an arithmetic number, because the mean of its divisors is an integer number (15935243940).

Almost surely, 2211221002012 is an apocalyptic number.

It is an amenable number.

211221002012 is a deficient number, since it is larger than the sum of its proper divisors (171224852548).

211221002012 is a wasteful number, since it uses less digits than its factorization.

211221002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300061 (or 300059 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211221002012 its reverse (210200122112), we get a palindrome (421421124124).

The spelling of 211221002012 in words is "two hundred eleven billion, two hundred twenty-one million, two thousand, twelve".