1054321213021 has 4 divisors (see below), whose sum is σ = 1109811803200. Its totient is φ = 998830622844.

The previous prime is 1054321213009. The next prime is 1054321213027. The reversal of 1054321213021 is 1203121234501.

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 a de Polignac number, because none of the positive numbers 2^k-1054321213021 is a prime.

It is a super-2 number, since 2×1054321213021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054321213027) 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, 27745295061 + ... + 27745295098.

It is an arithmetic number, because the mean of its divisors is an integer number (277452950800).

Almost surely, 2^{1054321213021} is an apocalyptic number.

It is an amenable number.

1054321213021 is a deficient number, since it is larger than the sum of its proper divisors (55490590179).

1054321213021 is an equidigital number, since it uses as much as digits as its factorization.

1054321213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55490590178.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1054321213021 its reverse (1203121234501), we get a palindrome (2257442447522).

The spelling of 1054321213021 in words is "one trillion, fifty-four billion, three hundred twenty-one million, two hundred thirteen thousand, twenty-one".