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10210120101 = 321134457789
BaseRepresentation
bin10011000001001001…
…00001000110100101
3222100120010211201100
421200210201012211
5131402242320401
64405050150313
7511005405666
oct114044410645
928316124640
1010210120101
11436a38a395
121b8b422399
13c693a8bac
146cc01b36d
153eb565b86
hex2609211a5

10210120101 has 6 divisors (see below), whose sum is σ = 14747951270. Its totient is φ = 6806746728.

The previous prime is 10210120099. The next prime is 10210120121. The reversal of 10210120101 is 10102101201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6492169476 + 3717950625 = 80574^2 + 60975^2 .

It is not a de Polignac number, because 10210120101 - 21 = 10210120099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1134457789 = 10210120101 / (1 + 0 + 2 + 1 + 0 + 1 + 2 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210120121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567228886 + ... + 567228903.

Almost surely, 210210120101 is an apocalyptic number.

It is an amenable number.

10210120101 is a deficient number, since it is larger than the sum of its proper divisors (4537831169).

10210120101 is a wasteful number, since it uses less digits than its factorization.

10210120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134457795 (or 1134457792 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10210120101 its reverse (10102101201), we get a palindrome (20312221302).

The spelling of 10210120101 in words is "ten billion, two hundred ten million, one hundred twenty thousand, one hundred one".

Divisors: 1 3 9 1134457789 3403373367 10210120101