Search a number
-
+
1222212201 = 3758200581
BaseRepresentation
bin100100011011001…
…0111101001101001
310011011210210221120
41020312113221221
510000341242301
6321140125453
742200426610
oct11066275151
93134723846
101222212201
115779a8131
122a1396889
131662a07b2
14b8472877
1572476e36
hex48d97a69

1222212201 has 8 divisors (see below), whose sum is σ = 1862418624. Its totient is φ = 698406960.

The previous prime is 1222212197. The next prime is 1222212217. The reversal of 1222212201 is 1022122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222212201 - 22 = 1222212197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222212241) 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, 29100270 + ... + 29100311.

It is an arithmetic number, because the mean of its divisors is an integer number (232802328).

Almost surely, 21222212201 is an apocalyptic number.

It is an amenable number.

1222212201 is a deficient number, since it is larger than the sum of its proper divisors (640206423).

1222212201 is an equidigital number, since it uses as much as digits as its factorization.

1222212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58200591.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1222212201 is about 34960.1516158040. The cubic root of 1222212201 is about 1069.1751878620.

Adding to 1222212201 its reverse (1022122221), we get a palindrome (2244334422).

The spelling of 1222212201 in words is "one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred one".

Divisors: 1 3 7 21 58200581 174601743 407404067 1222212201