Base | Representation |
---|---|
bin | 10010110100101111… |
… | …000111110110110100 |
3 | 1221011121200010120112 |
4 | 102310233013312310 |
5 | 312343300333022 |
6 | 13141343522152 |
7 | 1313606123336 |
oct | 226457076664 |
9 | 57147603515 |
10 | 20212121012 |
11 | 8632240746 |
12 | 3b00bb9358 |
13 | 1ba1617025 |
14 | d9a541456 |
15 | 7d46bb8e2 |
hex | 4b4bc7db4 |
20212121012 has 6 divisors (see below), whose sum is σ = 35371211778. Its totient is φ = 10106060504.
The previous prime is 20212121009. The next prime is 20212121021. The reversal of 20212121012 is 21012121202.
It can be written as a sum of positive squares in only one way, i.e., 14485566736 + 5726554276 = 120356^2 + 75674^2 .
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526515123 + ... + 2526515130.
It is an arithmetic number, because the mean of its divisors is an integer number (5895201963).
Almost surely, 220212121012 is an apocalyptic number.
It is an amenable number.
20212121012 is a deficient number, since it is larger than the sum of its proper divisors (15159090766).
20212121012 is a wasteful number, since it uses less digits than its factorization.
20212121012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5053030257 (or 5053030255 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 14.
Adding to 20212121012 its reverse (21012121202), we get a palindrome (41224242214).
The spelling of 20212121012 in words is "twenty billion, two hundred twelve million, one hundred twenty-one thousand, twelve".
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