1225101 has 8 divisors (see below), whose sum is σ = 1719520. Its totient is φ = 773712.

The previous prime is 1225099. The next prime is 1225109. The reversal of 1225101 is 1015221.

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

It is not a de Polignac number, because 1225101 - 2¹ = 1225099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225109) 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, 10690 + ... + 10803.

It is an arithmetic number, because the mean of its divisors is an integer number (214940).

2^1225101 is an apocalyptic number.

It is an amenable number.

1225101 is a deficient number, since it is larger than the sum of its proper divisors (494419).

1225101 is a wasteful number, since it uses less digits than its factorization.

1225101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21515.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1225101 is about 1106.8428072676. The cubic root of 1225101 is about 107.0016886216.

It can be divided in two parts, 1225 and 101, that added together give a triangular number (1326 = T₅₁).

The spelling of 1225101 in words is "one million, two hundred twenty-five thousand, one hundred one".