2101225205 has 8 divisors (see below), whose sum is σ = 2528496000. Its totient is φ = 1676296336.

The previous prime is 2101225183. The next prime is 2101225207. The reversal of 2101225205 is 5025221012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101225205 - 2⁶ = 2101225141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101225207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583505 + ... + 587094.

It is an arithmetic number, because the mean of its divisors is an integer number (316062000).

Almost surely, 2^2101225205 is an apocalyptic number.

It is an amenable number.

2101225205 is a deficient number, since it is larger than the sum of its proper divisors (427270795).

2101225205 is a wasteful number, since it uses less digits than its factorization.

2101225205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170963.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2101225205 is about 45839.1230827990. The cubic root of 2101225205 is about 1280.8281597440.

Adding to 2101225205 its reverse (5025221012), we get a palindrome (7126446217).

The spelling of 2101225205 in words is "two billion, one hundred one million, two hundred twenty-five thousand, two hundred five".