1221443300130 has 64 divisors (see below), whose sum is σ = 3105051418368. Its totient is φ = 306444892160.

The previous prime is 1221443300111. The next prime is 1221443300131. The reversal of 1221443300130 is 310033441221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221443300130.

It is not an unprimeable number, because it can be changed into a prime (1221443300131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 940894 + ... + 1824326.

It is an arithmetic number, because the mean of its divisors is an integer number (48516428412).

Almost surely, 2^{1221443300130} is an apocalyptic number.

1221443300130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221443300130 is an abundant number, since it is smaller than the sum of its proper divisors (1883608118238).

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

1221443300130 is a wasteful number, since it uses less digits than its factorization.

1221443300130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886171.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1221443300130 its reverse (310033441221), we get a palindrome (1531476741351).

The spelling of 1221443300130 in words is "one trillion, two hundred twenty-one billion, four hundred forty-three million, three hundred thousand, one hundred thirty".