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20120021111011 = 239460318288983
BaseRepresentation
bin1001001001100100011101…
…01101100001000011100011
32122020110021212100200000111
410210302032231201003203
510114121300401023021
6110443002103032151
74144423610441263
oct444621655410343
978213255320014
1020120021111011
116457942431178
12230b48a43b657
13b2c404980113
144d7b582db7a3
1524d57bb0b8e1
hex124c8eb610e3

20120021111011 has 8 divisors (see below), whose sum is σ = 20208595760640. Its totient is φ = 20031483049032.

The previous prime is 20120021110967. The next prime is 20120021111017. The reversal of 20120021111011 is 11011112002102.

It is a happy number.

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 20120021111011 - 27 = 20120021110883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120021110982 and 20120021111000.

It is not an unprimeable number, because it can be changed into a prime (20120021111017) 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, 8044375 + ... + 10244608.

It is an arithmetic number, because the mean of its divisors is an integer number (2526074470080).

Almost surely, 220120021111011 is an apocalyptic number.

20120021111011 is a deficient number, since it is larger than the sum of its proper divisors (88574649629).

20120021111011 is a wasteful number, since it uses less digits than its factorization.

20120021111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18293825.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20120021111011 its reverse (11011112002102), we get a palindrome (31131133113113).

The spelling of 20120021111011 in words is "twenty trillion, one hundred twenty billion, twenty-one million, one hundred eleven thousand, eleven".

Divisors: 1 239 4603 1100117 18288983 4371066937 84184188749 20120021111011