1221442445410 has 32 divisors (see below), whose sum is σ = 2399906232000. Its totient is φ = 443894698560.

The previous prime is 1221442445381. The next prime is 1221442445441. The reversal of 1221442445410 is 145442441221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142960 + ... + 3510139.

It is an arithmetic number, because the mean of its divisors is an integer number (74997069750).

Almost surely, 2^{1221442445410} is an apocalyptic number.

1221442445410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221442445410 is a deficient number, since it is larger than the sum of its proper divisors (1178463786590).

1221442445410 is a wasteful number, since it uses less digits than its factorization.

1221442445410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654786.

The product of its (nonzero) digits is 40960, while the sum is 34.

Adding to 1221442445410 its reverse (145442441221), we get a palindrome (1366884886631).

The spelling of 1221442445410 in words is "one trillion, two hundred twenty-one billion, four hundred forty-two million, four hundred forty-five thousand, four hundred ten".