1221331200130 has 32 divisors (see below), whose sum is σ = 2274285697200. Its totient is φ = 471669364992.

The previous prime is 1221331200109. The next prime is 1221331200149. The reversal of 1221331200130 is 310021331221.

It can be written as a sum of positive squares in 8 ways, for example, as 1036321964001 + 185009236129 = 1017999^2 + 430127^2 .

It is a super-2 number, since 2×1221331200130² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221331200098 and 1221331200107.

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, 10343304 + ... + 10460716.

Almost surely, 2^{1221331200130} is an apocalyptic number.

1221331200130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221331200130 is a deficient number, since it is larger than the sum of its proper divisors (1052954497070).

1221331200130 is a wasteful number, since it uses less digits than its factorization.

1221331200130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153318.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1221331200130 its reverse (310021331221), we get a palindrome (1531352531351).

The spelling of 1221331200130 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-one million, two hundred thousand, one hundred thirty".