1225141221 has 8 divisors (see below), whose sum is σ = 1689850080. Its totient is φ = 788596592.

The previous prime is 1225141217. The next prime is 1225141231. The reversal of 1225141221 is 1221415221.

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 1225141221 - 2² = 1225141217 is a prime.

It is a super-2 number, since 2×1225141221² = 3001942022786741682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225141231) 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, 7040955 + ... + 7041128.

It is an arithmetic number, because the mean of its divisors is an integer number (211231260).

Almost surely, 2^1225141221 is an apocalyptic number.

It is an amenable number.

1225141221 is a deficient number, since it is larger than the sum of its proper divisors (464708859).

1225141221 is a wasteful number, since it uses less digits than its factorization.

1225141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14082115.

The product of its digits is 320, while the sum is 21.

The square root of 1225141221 is about 35002.0173847166. The cubic root of 1225141221 is about 1070.0285959109.

Adding to 1225141221 its reverse (1221415221), we get a palindrome (2446556442).

The spelling of 1225141221 in words is "one billion, two hundred twenty-five million, one hundred forty-one thousand, two hundred twenty-one".