1223021030021 has 32 divisors (see below), whose sum is σ = 1513350561792. Its totient is φ = 966067145280.

The previous prime is 1223021030017. The next prime is 1223021030041. The reversal of 1223021030021 is 1200301203221.

It is a cyclic number.

It is not a de Polignac number, because 1223021030021 - 2² = 1223021030017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223021030041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1243121 + ... + 1997846.

It is an arithmetic number, because the mean of its divisors is an integer number (47292205056).

Almost surely, 2^{1223021030021} is an apocalyptic number.

It is an amenable number.

1223021030021 is a deficient number, since it is larger than the sum of its proper divisors (290329531771).

1223021030021 is a wasteful number, since it uses less digits than its factorization.

1223021030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241089.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1223021030021 its reverse (1200301203221), we get a palindrome (2423322233242).

The spelling of 1223021030021 in words is "one trillion, two hundred twenty-three billion, twenty-one million, thirty thousand, twenty-one".