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101012 = 2225253

101012 has 6 divisors (see below), whose sum is σ = 176778. Its totient is φ = 50504.

The previous prime is 101009. The next prime is 101021. The reversal of 101012 is 210101.

It is a happy number.

101012 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 99856 + 1156 = 316^2 + 34^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 100987 and 101005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12623 + ... + 12630.

It is an arithmetic number, because the mean of its divisors is an integer number (29463).

2101012 is an apocalyptic number.

It is an amenable number.

101012 is a deficient number, since it is larger than the sum of its proper divisors (75766).

101012 is a wasteful number, since it uses less digits than its factorization.

101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25257 (or 25255 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 101012 is about 317.8238505839. The cubic root of 101012 is about 46.5719393652.

Adding to 101012 its reverse (210101), we get a palindrome (311113).

Multiplying 101012 by its reverse (210101), we get a palindrome (21222722212).

It can be divided in two parts, 10101 and 2, that multiplied together give a palindrome (20202).

The spelling of 101012 in words is "one hundred one thousand, twelve", and thus it is an iban number.

Divisors: 1 2 4 25253 50506 101012