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101222012 = 22171488559
BaseRepresentation
bin1100000100010…
…00011001111100
321001110121111102
412002020121330
5201403101022
614013312232
72336241623
oct602103174
9231417442
10101222012
1152156661
1229a95678
1317c80aa8
14d62c6ba
158d46a92
hex608867c

101222012 has 12 divisors (see below), whose sum is σ = 187558560. Its totient is φ = 47633856.

The previous prime is 101221979. The next prime is 101222021. The reversal of 101222012 is 210222101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101221984 and 101222002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744212 + ... + 744347.

It is an arithmetic number, because the mean of its divisors is an integer number (15629880).

Almost surely, 2101222012 is an apocalyptic number.

It is an amenable number.

101222012 is a deficient number, since it is larger than the sum of its proper divisors (86336548).

101222012 is a wasteful number, since it uses less digits than its factorization.

101222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488580 (or 1488578 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 101222012 is about 10060.9150677262. The cubic root of 101222012 is about 466.0419261461.

Adding to 101222012 its reverse (210222101), we get a palindrome (311444113).

The spelling of 101222012 in words is "one hundred one million, two hundred twenty-two thousand, twelve".

Divisors: 1 2 4 17 34 68 1488559 2977118 5954236 25305503 50611006 101222012