1321212442430 has 64 divisors (see below), whose sum is σ = 2577299688000. Its totient is φ = 485946252288.

The previous prime is 1321212442369. The next prime is 1321212442469. The reversal of 1321212442430 is 342442121231.

It is a junction number, because it is equal to n+sod(n) for n = 1321212442393 and 1321212442402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2645516 + ... + 3105024.

It is an arithmetic number, because the mean of its divisors is an integer number (40270307625).

Almost surely, 2^{1321212442430} is an apocalyptic number.

1321212442430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321212442430 is a deficient number, since it is larger than the sum of its proper divisors (1256087245570).

1321212442430 is a wasteful number, since it uses less digits than its factorization.

1321212442430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459981.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1321212442430 its reverse (342442121231), we get a palindrome (1663654563661).

The spelling of 1321212442430 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, four hundred forty-two thousand, four hundred thirty".