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1212021111122 = 22920896915709
BaseRepresentation
bin10001101000110010000…
…101100111100101010010
311021212102211112211100022
4101220302011213211102
5124324204401023442
62324443402423442
7153365004314153
oct21506205474522
94255384484308
101212021111122
11428019357878
12176a93501b82
138a3a6c31603
144293ac7d92a
15217da22b3d2
hex11a32167952

1212021111122 has 8 divisors (see below), whose sum is σ = 1880722413900. Its totient is φ = 585113639824.

The previous prime is 1212021111113. The next prime is 1212021111131. The reversal of 1212021111122 is 2211111202121.

It is an interprime number because it is at equal distance from previous prime (1212021111113) and next prime (1212021111131).

It can be written as a sum of positive squares in 2 ways, for example, as 1190850570121 + 21170541001 = 1091261^2 + 145501^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212021111122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10448457797 + ... + 10448457912.

Almost surely, 21212021111122 is an apocalyptic number.

1212021111122 is a deficient number, since it is larger than the sum of its proper divisors (668701302778).

1212021111122 is a wasteful number, since it uses less digits than its factorization.

1212021111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20896915740.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1212021111122 its reverse (2211111202121), we get a palindrome (3423132313243).

Subtracting 1212021111122 from its reverse (2211111202121), we obtain a palindrome (999090090999).

The spelling of 1212021111122 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred eleven thousand, one hundred twenty-two".