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20012010212 = 2213597367949
BaseRepresentation
bin10010101000110011…
…110000101011100100
31220122200010110011102
4102220303300223210
5311441033311322
613105434455232
71305626165045
oct225063605344
956580113142
1020012010212
11853a292517
123a65b94518
131b6c02147c
14d7bb308cc
157c1d3e792
hex4a8cf0ae4

20012010212 has 12 divisors (see below), whose sum is σ = 35023688700. Its totient is φ = 10005242016.

The previous prime is 20012010203. The next prime is 20012010253. The reversal of 20012010212 is 21201021002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9134771776 + 10877238436 = 95576^2 + 104294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20012010193 and 20012010202.

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, 129587 + ... + 238362.

It is an arithmetic number, because the mean of its divisors is an integer number (2918640725).

Almost surely, 220012010212 is an apocalyptic number.

It is an amenable number.

20012010212 is a deficient number, since it is larger than the sum of its proper divisors (15011678488).

20012010212 is a wasteful number, since it uses less digits than its factorization.

20012010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381550 (or 381548 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20012010212 its reverse (21201021002), we get a palindrome (41213031214).

The spelling of 20012010212 in words is "twenty billion, twelve million, ten thousand, two hundred twelve".

Divisors: 1 2 4 13597 27194 54388 367949 735898 1471796 5003002553 10006005106 20012010212