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1220102012201 = 1978877814127
BaseRepresentation
bin10001110000010011101…
…111110011110100101001
311022122022000012010122212
4101300103233303310221
5124442232103342301
62332301312254505
7154102156662422
oct21602357636451
94278260163585
101220102012201
11430495861416
12178569841435
138b09415bc97
14430a61a6649
1521b0e8a74bb
hex11c13bf3d29

1220102012201 has 8 divisors (see below), whose sum is σ = 1284335767680. Its totient is φ = 1155870042768.

The previous prime is 1220102012177. The next prime is 1220102012203. The reversal of 1220102012201 is 1022102010221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1220102012201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220102012203) 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, 1091600 + ... + 1905726.

It is an arithmetic number, because the mean of its divisors is an integer number (160541970960).

Almost surely, 21220102012201 is an apocalyptic number.

It is an amenable number.

1220102012201 is a deficient number, since it is larger than the sum of its proper divisors (64233755479).

1220102012201 is an equidigital number, since it uses as much as digits as its factorization.

1220102012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893023.

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

Adding to 1220102012201 its reverse (1022102010221), we get a palindrome (2242204022422).

The spelling of 1220102012201 in words is "one trillion, two hundred twenty billion, one hundred two million, twelve thousand, two hundred one".

Divisors: 1 19 78877 814127 1498663 15468413 64215895379 1220102012201