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11211030100 = 2252112110301
BaseRepresentation
bin10100111000011101…
…01011111001010100
31001221022112100010001
422130032223321110
5140430010430400
65052243141044
7544551116644
oct123416537124
931838470101
1011211030100
114833374936
12220a674784
13109887432a
14784d24524
15459376a6a
hex29c3abe54

11211030100 has 18 divisors (see below), whose sum is σ = 24327935534. Its totient is φ = 4484412000.

The previous prime is 11211030073. The next prime is 11211030107. The reversal of 11211030100 is 103011211.

It can be written as a sum of positive squares in 3 ways, for example, as 1606246084 + 9604784016 = 40078^2 + 98004^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211030107) 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, 56055051 + ... + 56055250.

Almost surely, 211211030100 is an apocalyptic number.

11211030100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211030100 is an abundant number, since it is smaller than the sum of its proper divisors (13116905434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211030100 is a wasteful number, since it uses less digits than its factorization.

11211030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112110315 (or 112110308 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 11211030100 its reverse (103011211), we get a palindrome (11314041311).

The spelling of 11211030100 in words is "eleven billion, two hundred eleven million, thirty thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 112110301 224220602 448441204 560551505 1121103010 2242206020 2802757525 5605515050 11211030100