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2001221102011 = 59157463466619
BaseRepresentation
bin11101000111110010000…
…100101010100110111011
321002022111112120021000111
4131013302010222212323
5230242000100231021
64131203121245151
7264404060462155
oct35076204524673
97068445507014
102001221102011
1170179315a8aa
12283a24a937b7
13116939536741
146cc06b13ad5
15370ca2d58e1
hex1d1f212a9bb

2001221102011 has 16 divisors (see below), whose sum is σ = 2052530726400. Its totient is φ = 1950545364768.

The previous prime is 2001221101991. The next prime is 2001221102077. The reversal of 2001221102011 is 1102011221002.

It is a cyclic number.

It is not a de Polignac number, because 2001221102011 - 29 = 2001221101499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001221101982 and 2001221102000.

It is not an unprimeable number, because it can be changed into a prime (2001221102311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4055460 + ... + 4522078.

It is an arithmetic number, because the mean of its divisors is an integer number (128283170400).

Almost surely, 22001221102011 is an apocalyptic number.

2001221102011 is a deficient number, since it is larger than the sum of its proper divisors (51309624389).

2001221102011 is a wasteful number, since it uses less digits than its factorization.

2001221102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467298.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001221102011 its reverse (1102011221002), we get a palindrome (3103232323013).

The spelling of 2001221102011 in words is "two trillion, one billion, two hundred twenty-one million, one hundred two thousand, eleven".

Divisors: 1 59 157 463 9263 27317 72691 466619 4288769 27530521 73259183 216044597 4322291797 12746631223 33919001729 2001221102011