1221024101023 has 32 divisors (see below), whose sum is σ = 1338957316224. Its totient is φ = 1108754583552.

The previous prime is 1221024101009. The next prime is 1221024101051. The reversal of 1221024101023 is 3201014201221.

It is not a de Polignac number, because 1221024101023 - 2⁹ = 1221024100511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221024101623) 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, 83321965 + ... + 83336617.

It is an arithmetic number, because the mean of its divisors is an integer number (41842416132).

Almost surely, 2^{1221024101023} is an apocalyptic number.

1221024101023 is a deficient number, since it is larger than the sum of its proper divisors (117933215201).

1221024101023 is a wasteful number, since it uses less digits than its factorization.

1221024101023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15811.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1221024101023 its reverse (3201014201221), we get a palindrome (4422038302244).

The spelling of 1221024101023 in words is "one trillion, two hundred twenty-one billion, twenty-four million, one hundred one thousand, twenty-three".