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120044221 = 11390191
BaseRepresentation
bin1110010011110…
…11101010111101
322100212212201021
413021323222331
5221212403341
615524544141
72655234103
oct711735275
9270785637
10120044221
1161842000
1234252051
131bb410ab
1411d2bc73
15a8139d1
hex727babd

120044221 has 8 divisors (see below), whose sum is σ = 132041088. Its totient is φ = 109129900.

The previous prime is 120044219. The next prime is 120044227. The reversal of 120044221 is 122440021.

It is not a de Polignac number, because 120044221 - 21 = 120044219 is a prime.

It is a super-2 number, since 2×1200442212 = 28821229990993682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120044195 and 120044204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120044227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43765 + ... + 46426.

It is an arithmetic number, because the mean of its divisors is an integer number (16505136).

Almost surely, 2120044221 is an apocalyptic number.

120044221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120044221 is a deficient number, since it is larger than the sum of its proper divisors (11996867).

120044221 is an frugal number, since it uses more digits than its factorization.

120044221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90224 (or 90202 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 120044221 is about 10956.4693674559. The cubic root of 120044221 is about 493.3029954053.

Adding to 120044221 its reverse (122440021), we get a palindrome (242484242).

The spelling of 120044221 in words is "one hundred twenty million, forty-four thousand, two hundred twenty-one".

Divisors: 1 11 121 1331 90191 992101 10913111 120044221