1021340124420 has 192 divisors, whose sum is σ = 3688351027200. Its totient is φ = 204908336640.

The previous prime is 1021340124379. The next prime is 1021340124421. The reversal of 1021340124420 is 244210431201.

It is a super-2 number, since 2×1021340124420² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021340124421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3677560 + ... + 3945519.

It is an arithmetic number, because the mean of its divisors is an integer number (19210161600).

Almost surely, 2^{1021340124420} is an apocalyptic number.

1021340124420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021340124420 is an abundant number, since it is smaller than the sum of its proper divisors (2667010902780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021340124420 is a wasteful number, since it uses less digits than its factorization.

1021340124420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623138 (or 7623136 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1021340124420 its reverse (244210431201), we get a palindrome (1265550555621).

The spelling of 1021340124420 in words is "one trillion, twenty-one billion, three hundred forty million, one hundred twenty-four thousand, four hundred twenty".