Search a number
-
+
111010212021 = 3166922171003
BaseRepresentation
bin110011101100010111…
…0010110100010110101
3101121112111022001202010
41213120232112202311
53304322103241041
6122555234034433
711006636143002
oct1473056264265
9347474261663
10111010212021
1143096409385
1219621118a19
13a6118a12b7
14553142c8a9
152d4ab44a16
hex19d8b968b5

111010212021 has 8 divisors (see below), whose sum is σ = 148102306720. Its totient is φ = 73962462672.

The previous prime is 111010212013. The next prime is 111010212029. The reversal of 111010212021 is 120212010111.

It is an interprime number because it is at equal distance from previous prime (111010212013) and next prime (111010212029).

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

It is not a de Polignac number, because 111010212021 - 23 = 111010212013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010211988 and 111010212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010212029) 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, 11080495 + ... + 11090508.

It is an arithmetic number, because the mean of its divisors is an integer number (18512788340).

Almost surely, 2111010212021 is an apocalyptic number.

It is an amenable number.

111010212021 is a deficient number, since it is larger than the sum of its proper divisors (37092094699).

111010212021 is a wasteful number, since it uses less digits than its factorization.

111010212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22172675.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111010212021 its reverse (120212010111), we get a palindrome (231222222132).

The spelling of 111010212021 in words is "one hundred eleven billion, ten million, two hundred twelve thousand, twenty-one".

Divisors: 1 3 1669 5007 22171003 66513009 37003404007 111010212021