1221412310 has 16 divisors (see below), whose sum is σ = 2199542256. Its totient is φ = 488342688.

The previous prime is 1221412271. The next prime is 1221412319. The reversal of 1221412310 is 132141221.

It is a super-2 number, since 2×1221412310² = 2983696062039072200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221412319) 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, 3704 + ... + 49563.

It is an arithmetic number, because the mean of its divisors is an integer number (137471391).

Almost surely, 2^1221412310 is an apocalyptic number.

1221412310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221412310 is a deficient number, since it is larger than the sum of its proper divisors (978129946).

1221412310 is a wasteful number, since it uses less digits than its factorization.

1221412310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55567.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1221412310 is about 34948.7097043653. The cubic root of 1221412310 is about 1068.9418922451.

Adding to 1221412310 its reverse (132141221), we get a palindrome (1353553531).

The spelling of 1221412310 in words is "one billion, two hundred twenty-one million, four hundred twelve thousand, three hundred ten".