1201221310 has 16 divisors (see below), whose sum is σ = 2192653152. Its totient is φ = 473720800.

The previous prime is 1201221293. The next prime is 1201221313. The reversal of 1201221310 is 131221021.

It is a super-2 number, since 2×1201221310² = 2885865271196232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201221313) 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, 845221 + ... + 846640.

It is an arithmetic number, because the mean of its divisors is an integer number (137040822).

Almost surely, 2^1201221310 is an apocalyptic number.

1201221310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201221310 is a deficient number, since it is larger than the sum of its proper divisors (991431842).

1201221310 is a wasteful number, since it uses less digits than its factorization.

1201221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691939.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1201221310 is about 34658.6397598059. The cubic root of 1201221310 is about 1063.0189568192.

Adding to 1201221310 its reverse (131221021), we get a palindrome (1332442331).

The spelling of 1201221310 in words is "one billion, two hundred one million, two hundred twenty-one thousand, three hundred ten".