101219045 has 4 divisors (see below), whose sum is σ = 121462860. Its totient is φ = 80975232.

The previous prime is 101219017. The next prime is 101219089. The reversal of 101219045 is 540912101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71385601 + 29833444 = 8449^2 + 5462^2 .

It is a cyclic number.

It is not a de Polignac number, because 101219045 - 2¹⁰ = 101218021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101219045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10121900 + ... + 10121909.

It is an arithmetic number, because the mean of its divisors is an integer number (30365715).

Almost surely, 2^101219045 is an apocalyptic number.

It is an amenable number.

101219045 is a deficient number, since it is larger than the sum of its proper divisors (20243815).

101219045 is an equidigital number, since it uses as much as digits as its factorization.

101219045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20243814.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 101219045 is about 10060.7676148493. The cubic root of 101219045 is about 466.0373725914.

The spelling of 101219045 in words is "one hundred one million, two hundred nineteen thousand, forty-five".