201012090 has 16 divisors (see below), whose sum is σ = 482429088. Its totient is φ = 53603216.

The previous prime is 201012073. The next prime is 201012101. The reversal of 201012090 is 90210102.

It is a happy number.

It is a super-3 number, since 3×201012090³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350172 + ... + 3350231.

It is an arithmetic number, because the mean of its divisors is an integer number (30151818).

Almost surely, 2^201012090 is an apocalyptic number.

201012090 is an abundant number, since it is smaller than the sum of its proper divisors (281416998).

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

201012090 is a wasteful number, since it uses less digits than its factorization.

201012090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700413.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 201012090 is about 14177.8732537712. The cubic root of 201012090 is about 585.7883447047.

Adding to 201012090 its reverse (90210102), we get a palindrome (291222192).

The spelling of 201012090 in words is "two hundred one million, twelve thousand, ninety".