1011421304421 has 32 divisors (see below), whose sum is σ = 1533650927616. Its totient is φ = 587335560000.

The previous prime is 1011421304347. The next prime is 1011421304473. The reversal of 1011421304421 is 1244031241101.

It is a happy number.

It is not a de Polignac number, because 1011421304421 - 2¹⁷ = 1011421173349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011421304391 and 1011421304400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011421304221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4791141 + ... + 4997786.

It is an arithmetic number, because the mean of its divisors is an integer number (47926591488).

Almost surely, 2^{1011421304421} is an apocalyptic number.

1011421304421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011421304421 is a deficient number, since it is larger than the sum of its proper divisors (522229623195).

1011421304421 is a wasteful number, since it uses less digits than its factorization.

1011421304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9789073.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 1011421304421 its reverse (1244031241101), we get a palindrome (2255452545522).

The spelling of 1011421304421 in words is "one trillion, eleven billion, four hundred twenty-one million, three hundred four thousand, four hundred twenty-one".