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1122222122121 = 32477151018991
BaseRepresentation
bin10000010101001001101…
…001101010010010001001
310222021122120220112110210
4100111021221222102021
5121341302330401441
62215313002431333
7144035465435412
oct20251151522211
93867576815423
101122222122121
113a2a2814a281
121615b1b02549
1381a9595b869
143c45c948809
151e2d1858616
hex10549a6a489

1122222122121 has 8 divisors (see below), whose sum is σ = 1496900248704. Its totient is φ = 747846038480.

The previous prime is 1122222122113. The next prime is 1122222122129. The reversal of 1122222122121 is 1212212222211.

It is an interprime number because it is at equal distance from previous prime (1122222122113) and next prime (1122222122129).

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

It is a cyclic number.

It is not a de Polignac number, because 1122222122121 - 23 = 1122222122113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122222122129) 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, 75502065 + ... + 75516926.

It is an arithmetic number, because the mean of its divisors is an integer number (187112531088).

Almost surely, 21122222122121 is an apocalyptic number.

It is an amenable number.

1122222122121 is a deficient number, since it is larger than the sum of its proper divisors (374678126583).

1122222122121 is a wasteful number, since it uses less digits than its factorization.

1122222122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151021471.

The product of its digits is 256, while the sum is 21.

Adding to 1122222122121 its reverse (1212212222211), we get a palindrome (2334434344332).

The spelling of 1122222122121 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".

Divisors: 1 3 2477 7431 151018991 453056973 374074040707 1122222122121