1023103242021 has 16 divisors (see below), whose sum is σ = 1559079900800. Its totient is φ = 584605885248.

The previous prime is 1023103242011. The next prime is 1023103242043. The reversal of 1023103242021 is 1202423013201.

It is not a de Polignac number, because 1023103242021 - 2¹¹ = 1023103239973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023103242011) 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, 504106 + ... + 1516683.

It is an arithmetic number, because the mean of its divisors is an integer number (97442493800).

Almost surely, 2^{1023103242021} is an apocalyptic number.

It is an amenable number.

1023103242021 is a deficient number, since it is larger than the sum of its proper divisors (535976658779).

1023103242021 is a wasteful number, since it uses less digits than its factorization.

1023103242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044908.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1023103242021 its reverse (1202423013201), we get a palindrome (2225526255222).

The spelling of 1023103242021 in words is "one trillion, twenty-three billion, one hundred three million, two hundred forty-two thousand, twenty-one".