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2222100001 = 114127118181
BaseRepresentation
bin1000010001110010…
…1000111000100001
312201212021101011001
42010130220320201
514022324200001
61004255152001
7106031352442
oct20434507041
95655241131
102222100001
11a40354690
12520215601
1329549b894
141711912c9
15d0135001
hex84728e21

2222100001 has 16 divisors (see below), whose sum is σ = 2492534016. Its totient is φ = 1963440000.

The previous prime is 2222099969. The next prime is 2222100029. The reversal of 2222100001 is 1000012222.

It is a cyclic number.

It is not a de Polignac number, because 2222100001 - 25 = 2222099969 is a prime.

It is a super-5 number, since 5×22221000015 (a number of 48 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222100301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113131 + ... + 131311.

It is an arithmetic number, because the mean of its divisors is an integer number (155783376).

Almost surely, 22222100001 is an apocalyptic number.

It is an amenable number.

2222100001 is a deficient number, since it is larger than the sum of its proper divisors (270434015).

2222100001 is a wasteful number, since it uses less digits than its factorization.

2222100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18504.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2222100001 is about 47139.1557094524. The cubic root of 2222100001 is about 1304.9319559556.

Adding to 2222100001 its reverse (1000012222), we get a palindrome (3222112223).

It can be divided in two parts, 2222 and 100001, that multiplied together give a palindrome (222202222).

The spelling of 2222100001 in words is "two billion, two hundred twenty-two million, one hundred thousand, one".

Divisors: 1 11 41 271 451 2981 11111 18181 122221 199991 745421 4927051 8199631 54197561 202009091 2222100001