1221030101023 has 8 divisors (see below), whose sum is σ = 1249445778768. Its totient is φ = 1192615315584.

The previous prime is 1221030100921. The next prime is 1221030101101. The reversal of 1221030101023 is 3201010301221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221030101023 - 2²⁵ = 1220996546591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221030100988 and 1221030101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221030101323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122661 + ... + 3491857.

It is an arithmetic number, because the mean of its divisors is an integer number (156180722346).

Almost surely, 2^{1221030101023} is an apocalyptic number.

1221030101023 is a deficient number, since it is larger than the sum of its proper divisors (28415677745).

1221030101023 is an equidigital number, since it uses as much as digits as its factorization.

1221030101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446153.

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

Adding to 1221030101023 its reverse (3201010301221), we get a palindrome (4422040402244).

The spelling of 1221030101023 in words is "one trillion, two hundred twenty-one billion, thirty million, one hundred one thousand, twenty-three".