1023424331021 has 2 divisors, whose sum is σ = 1023424331022. Its totient is φ = 1023424331020.

The previous prime is 1023424330997. The next prime is 1023424331053. The reversal of 1023424331021 is 1201334243201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023354792100 + 69538921 = 1011610^2 + 8339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023424331021 - 2³⁴ = 1006244461837 is a prime.

It is a super-2 number, since 2×1023424331021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023424331521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511712165510 + 511712165511.

It is an arithmetic number, because the mean of its divisors is an integer number (511712165511).

Almost surely, 2^{1023424331021} is an apocalyptic number.

It is an amenable number.

1023424331021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023424331021 is an equidigital number, since it uses as much as digits as its factorization.

1023424331021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1023424331021 its reverse (1201334243201), we get a palindrome (2224758574222).

The spelling of 1023424331021 in words is "one trillion, twenty-three billion, four hundred twenty-four million, three hundred thirty-one thousand, twenty-one".