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2220212001 = 37217984377
BaseRepresentation
bin1000010001010101…
…1011111100100001
312201201201110022010
42010111123330201
514021333241001
61004150503133
7106006330200
oct20425337441
95651643263
102220212001
11a3a285157
1251b664aa9
13294c8a417
14170c1d237
15cedb08d6
hex8455bf21

2220212001 has 24 divisors (see below), whose sum is σ = 3462873120. Its totient is φ = 1261589952.

The previous prime is 2220211979. The next prime is 2220212017. The reversal of 2220212001 is 1002120222.

It is not a de Polignac number, because 2220212001 - 25 = 2220211969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2220210001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15876 + ... + 68501.

It is an arithmetic number, because the mean of its divisors is an integer number (144286380).

Almost surely, 22220212001 is an apocalyptic number.

2220212001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2220212001 is a deficient number, since it is larger than the sum of its proper divisors (1242661119).

2220212001 is a wasteful number, since it uses less digits than its factorization.

2220212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84573 (or 84566 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2220212001 is about 47119.1256391712. The cubic root of 2220212001 is about 1304.5622741797.

Adding to 2220212001 its reverse (1002120222), we get a palindrome (3222332223).

The spelling of 2220212001 in words is "two billion, two hundred twenty million, two hundred twelve thousand, one".

Divisors: 1 3 7 21 49 147 179 537 1253 3759 8771 26313 84377 253131 590639 1771917 4134473 12403419 15103483 45310449 105724381 317173143 740070667 2220212001