Search a number
-
+
10101021 = 37481001
BaseRepresentation
bin100110100010…
…000100011101
3201000011222220
4212202010131
510041213041
61000255553
7151600020
oct46420435
921004886
1010101021
11577a057
1234715b9
132128848
1414ad1b7
15d47d66
hex9a211d

10101021 has 8 divisors (see below), whose sum is σ = 15392064. Its totient is φ = 5772000.

The previous prime is 10100999. The next prime is 10101023. The reversal of 10101021 is 12010101.

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

It is not a de Polignac number, because 10101021 - 210 = 10099997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101023) 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, 240480 + ... + 240521.

It is an arithmetic number, because the mean of its divisors is an integer number (1924008).

Almost surely, 210101021 is an apocalyptic number.

It is an amenable number.

10101021 is a deficient number, since it is larger than the sum of its proper divisors (5291043).

10101021 is an equidigital number, since it uses as much as digits as its factorization.

10101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481011.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 10101021 is about 3178.2103454617. The cubic root of 10101021 is about 216.1665168305.

Adding to 10101021 its reverse (12010101), we get a palindrome (22111122).

Multiplying 10101021 by its reverse (12010101), we get a palindrome (121314282413121).

The spelling of 10101021 in words is "ten million, one hundred one thousand, twenty-one".

Divisors: 1 3 7 21 481001 1443003 3367007 10101021