1221444241410 has 32 divisors (see below), whose sum is σ = 2931593783040. Its totient is φ = 325704286208.

The previous prime is 1221444241397. The next prime is 1221444241417. The reversal of 1221444241410 is 141424441221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1221444241417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176127 + ... + 1572866.

It is an arithmetic number, because the mean of its divisors is an integer number (91612305720).

Almost surely, 2^{1221444241410} is an apocalyptic number.

1221444241410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221444241410 is an abundant number, since it is smaller than the sum of its proper divisors (1710149541630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221444241410 is a wasteful number, since it uses less digits than its factorization.

1221444241410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772282.

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 1221444241410 its reverse (141424441221), we get a palindrome (1362868682631).

The spelling of 1221444241410 in words is "one trillion, two hundred twenty-one billion, four hundred forty-four million, two hundred forty-one thousand, four hundred ten".