100221125045 has 24 divisors (see below), whose sum is σ = 126963059256. Its totient is φ = 75936235392.

The previous prime is 100221125021. The next prime is 100221125057. The reversal of 100221125045 is 540521122001.

It can be written as a sum of positive squares in 4 ways, for example, as 5924226961 + 94296898084 = 76969^2 + 307078^2 .

It is not a de Polignac number, because 100221125045 - 2¹⁶ = 100221059509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100221125045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10921079 + ... + 10930251.

It is an arithmetic number, because the mean of its divisors is an integer number (5290127469).

Almost surely, 2^100221125045 is an apocalyptic number.

It is an amenable number.

100221125045 is a deficient number, since it is larger than the sum of its proper divisors (26741934211).

100221125045 is an equidigital number, since it uses as much as digits as its factorization.

100221125045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15269 (or 15250 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 100221125045 its reverse (540521122001), we get a palindrome (640742247046).

The spelling of 100221125045 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty-five thousand, forty-five".