1321210212030 has 48 divisors (see below), whose sum is σ = 3436181077680. Its totient is φ = 352216617984.

The previous prime is 1321210211989. The next prime is 1321210212043. The reversal of 1321210212030 is 302120121231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1321210211994 and 1321210212012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1909795 + ... + 2507934.

It is an arithmetic number, because the mean of its divisors is an integer number (71587105785).

Almost surely, 2^{1321210212030} is an apocalyptic number.

1321210212030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321210212030 is an abundant number, since it is smaller than the sum of its proper divisors (2114970865650).

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

1321210212030 is a wasteful number, since it uses less digits than its factorization.

1321210212030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421065 (or 4421062 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1321210212030 its reverse (302120121231), we get a palindrome (1623330333261).

The spelling of 1321210212030 in words is "one trillion, three hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, thirty".