1054421025021 has 72 divisors (see below), whose sum is σ = 1925832845664. Its totient is φ = 550979876160.

The previous prime is 1054421025001. The next prime is 1054421025089. The reversal of 1054421025021 is 1205201244501.

It is a happy number.

1054421025021 is a `hidden beast` number, since 1 + 0 + 54 + 4 + 2 + 102 + 502 + 1 = 666.

It is not a de Polignac number, because 1054421025021 - 2⁶ = 1054421024957 is a prime.

It is a super-2 number, since 2×1054421025021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054421025001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 246015 + ... + 1472876.

It is an arithmetic number, because the mean of its divisors is an integer number (26747678412).

Almost surely, 2^{1054421025021} is an apocalyptic number.

It is an amenable number.

1054421025021 is a deficient number, since it is larger than the sum of its proper divisors (871411820643).

1054421025021 is a wasteful number, since it uses less digits than its factorization.

1054421025021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719031 (or 1719021 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1054421025021 its reverse (1205201244501), we get a palindrome (2259622269522).

The spelling of 1054421025021 in words is "one trillion, fifty-four billion, four hundred twenty-one million, twenty-five thousand, twenty-one".