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20122030220 = 2251006101511
BaseRepresentation
bin10010101111010111…
…011101000010001100
31220221100011001020112
4102233113131002030
5312202214431340
613124404535152
71311433302065
oct225727350214
956840131215
1020122030220
1185963a8146
123a969b14b8
131b88a62976
14d8c5ad56c
157cb823065
hex4af5dd08c

20122030220 has 12 divisors (see below), whose sum is σ = 42256263504. Its totient is φ = 8048812080.

The previous prime is 20122030207. The next prime is 20122030231. The reversal of 20122030220 is 2203022102.

It is a super-2 number, since 2×201220302202 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20122030195 and 20122030204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503050736 + ... + 503050775.

It is an arithmetic number, because the mean of its divisors is an integer number (3521355292).

Almost surely, 220122030220 is an apocalyptic number.

20122030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122030220 is an abundant number, since it is smaller than the sum of its proper divisors (22134233284).

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

20122030220 is a wasteful number, since it uses less digits than its factorization.

20122030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006101520 (or 1006101518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20122030220 its reverse (2203022102), we get a palindrome (22325052322).

The spelling of 20122030220 in words is "twenty billion, one hundred twenty-two million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1006101511 2012203022 4024406044 5030507555 10061015110 20122030220