1213123023030 has 64 divisors (see below), whose sum is σ = 2961354297600. Its totient is φ = 317961475200.

The previous prime is 1213123023029. The next prime is 1213123023041. The reversal of 1213123023030 is 303203213121.

It is a junction number, because it is equal to n+sod(n) for n = 1213123022988 and 1213123023006.

It is a congruent number.

It is an unprimeable number.

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, 10742601 + ... + 10854939.

It is an arithmetic number, because the mean of its divisors is an integer number (46271160900).

Almost surely, 2^{1213123023030} is an apocalyptic number.

1213123023030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213123023030 is an abundant number, since it is smaller than the sum of its proper divisors (1748231274570).

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

1213123023030 is a wasteful number, since it uses less digits than its factorization.

1213123023030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118509.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1213123023030 its reverse (303203213121), we get a palindrome (1516326236151).

The spelling of 1213123023030 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-three thousand, thirty".