1021430410421 has 8 divisors (see below), whose sum is σ = 1039926855744. Its totient is φ = 1003081347520.

The previous prime is 1021430410393. The next prime is 1021430410477. The reversal of 1021430410421 is 1240140341201.

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

It is a de Polignac number, because none of the positive numbers 2^k-1021430410421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021430440421) 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, 36831620 + ... + 36859341.

It is an arithmetic number, because the mean of its divisors is an integer number (129990856968).

Almost surely, 2^{1021430410421} is an apocalyptic number.

It is an amenable number.

1021430410421 is a deficient number, since it is larger than the sum of its proper divisors (18496445323).

1021430410421 is an equidigital number, since it uses as much as digits as its factorization.

1021430410421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73691211.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1021430410421 its reverse (1240140341201), we get a palindrome (2261570751622).

The spelling of 1021430410421 in words is "one trillion, twenty-one billion, four hundred thirty million, four hundred ten thousand, four hundred twenty-one".