1223100130021 has 16 divisors (see below), whose sum is σ = 1524989541888. Its totient is φ = 953011609200.

The previous prime is 1223100130003. The next prime is 1223100130073. The reversal of 1223100130021 is 1200310013221.

It is not a de Polignac number, because 1223100130021 - 2¹⁹ = 1223099605733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223100129977 and 1223100130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223100130321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966126 + ... + 1838368.

It is an arithmetic number, because the mean of its divisors is an integer number (95311846368).

Almost surely, 2^{1223100130021} is an apocalyptic number.

1223100130021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223100130021 is a deficient number, since it is larger than the sum of its proper divisors (301889411867).

1223100130021 is a wasteful number, since it uses less digits than its factorization.

1223100130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890472.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1223100130021 its reverse (1200310013221), we get a palindrome (2423410143242).

The spelling of 1223100130021 in words is "one trillion, two hundred twenty-three billion, one hundred million, one hundred thirty thousand, twenty-one".