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11012121121 = 49922068379
BaseRepresentation
bin10100100000101111…
…11010001000100001
31001102110020201021211
422100113322020201
5140023100333441
65020415550121
7536614325251
oct122027721041
931373221254
1011012121121
114741067651
122173b2b341
1310665ac801
14766747961
15446b85a81
hex2905fa221

11012121121 has 4 divisors (see below), whose sum is σ = 11034190000. Its totient is φ = 10990052244.

The previous prime is 11012121119. The next prime is 11012121151. The reversal of 11012121121 is 12112121011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11012121121 - 21 = 11012121119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012121151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11033691 + ... + 11034688.

It is an arithmetic number, because the mean of its divisors is an integer number (2758547500).

Almost surely, 211012121121 is an apocalyptic number.

It is an amenable number.

11012121121 is a deficient number, since it is larger than the sum of its proper divisors (22068879).

11012121121 is an equidigital number, since it uses as much as digits as its factorization.

11012121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22068878.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11012121121 its reverse (12112121011), we get a palindrome (23124242132).

The spelling of 11012121121 in words is "eleven billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".

Divisors: 1 499 22068379 11012121121