1223221031130 has 64 divisors (see below), whose sum is σ = 3531705845760. Its totient is φ = 264877936704.

The previous prime is 1223221031069. The next prime is 1223221031167. The reversal of 1223221031130 is 311301223221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1223221031097 and 1223221031106.

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, 153281854 + ... + 153289833.

It is an arithmetic number, because the mean of its divisors is an integer number (55182903840).

Almost surely, 2^{1223221031130} is an apocalyptic number.

1223221031130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223221031130 is an abundant number, since it is smaller than the sum of its proper divisors (2308484814630).

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

1223221031130 is a wasteful number, since it uses less digits than its factorization.

1223221031130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306571723.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1223221031130 its reverse (311301223221), we get a palindrome (1534522254351).

The spelling of 1223221031130 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-one million, thirty-one thousand, one hundred thirty".