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120211011 = 3213356779
BaseRepresentation
bin1110010101001…
…00011001000011
322101012100111200
413022210121003
5221233223021
615532312243
72656530264
oct712443103
9271170450
10120211011
1161946348
1234312683
131bb9bc9b
1411d7296b
15a848126
hex72a4643

120211011 has 6 divisors (see below), whose sum is σ = 173638140. Its totient is φ = 80140668.

The previous prime is 120211009. The next prime is 120211019. The reversal of 120211011 is 110112021.

It is a happy number.

It is not a de Polignac number, because 120211011 - 21 = 120211009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13356779 = 120211011 / (1 + 2 + 0 + 2 + 1 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 120210984 and 120211002.

It is not an unprimeable number, because it can be changed into a prime (120211019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6678381 + ... + 6678398.

It is an arithmetic number, because the mean of its divisors is an integer number (28939690).

Almost surely, 2120211011 is an apocalyptic number.

120211011 is a deficient number, since it is larger than the sum of its proper divisors (53427129).

120211011 is a wasteful number, since it uses less digits than its factorization.

120211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13356785 (or 13356782 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 120211011 is about 10964.0782102282. The cubic root of 120211011 is about 493.5313555032.

Adding to 120211011 its reverse (110112021), we get a palindrome (230323032).

The spelling of 120211011 in words is "one hundred twenty million, two hundred eleven thousand, eleven".

Divisors: 1 3 9 13356779 40070337 120211011