1021124230421 has 4 divisors (see below), whose sum is σ = 1021131433344. Its totient is φ = 1021117027500.

The previous prime is 1021124230319. The next prime is 1021124230457. The reversal of 1021124230421 is 1240324211201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021124230421 - 2³⁸ = 746246323477 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 (1021124235421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3384455 + ... + 3673796.

It is an arithmetic number, because the mean of its divisors is an integer number (255282858336).

Almost surely, 2^{1021124230421} is an apocalyptic number.

It is an amenable number.

1021124230421 is a deficient number, since it is larger than the sum of its proper divisors (7202923).

1021124230421 is an equidigital number, since it uses as much as digits as its factorization.

1021124230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202922.

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

Adding to 1021124230421 its reverse (1240324211201), we get a palindrome (2261448441622).

The spelling of 1021124230421 in words is "one trillion, twenty-one billion, one hundred twenty-four million, two hundred thirty thousand, four hundred twenty-one".