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20201201111 = 713221991221
BaseRepresentation
bin10010110100000101…
…011101110111010111
31221010212010100021202
4102310011131313113
5312333001413421
613140313503115
71313414243030
oct226405356727
957125110252
1020201201111
118627062433
123ab9411a9b
131b9c292850
14d98cdba87
157d376110b
hex4b415ddd7

20201201111 has 8 divisors (see below), whose sum is σ = 24863016864. Its totient is φ = 15983367840.

The previous prime is 20201201107. The next prime is 20201201113. The reversal of 20201201111 is 11110210202.

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 20201201111 - 22 = 20201201107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201201092 and 20201201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201201113) 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, 110995520 + ... + 110995701.

It is an arithmetic number, because the mean of its divisors is an integer number (3107877108).

Almost surely, 220201201111 is an apocalyptic number.

20201201111 is a deficient number, since it is larger than the sum of its proper divisors (4661815753).

20201201111 is a wasteful number, since it uses less digits than its factorization.

20201201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221991241.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20201201111 its reverse (11110210202), we get a palindrome (31311411313).

Subtracting from 20201201111 its reverse (11110210202), we obtain a palindrome (9090990909).

The spelling of 20201201111 in words is "twenty billion, two hundred one million, two hundred one thousand, one hundred eleven".