1021210054 has 4 divisors (see below), whose sum is σ = 1531815084. Its totient is φ = 510605026.

The previous prime is 1021210049. The next prime is 1021210063. The reversal of 1021210054 is 4500121201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 255302512 + ... + 255302515.

It is an arithmetic number, because the mean of its divisors is an integer number (382953771).

Almost surely, 2^1021210054 is an apocalyptic number.

1021210054 is a deficient number, since it is larger than the sum of its proper divisors (510605030).

1021210054 is an equidigital number, since it uses as much as digits as its factorization.

1021210054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510605029.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1021210054 is about 31956.3773603955. The cubic root of 1021210054 is about 1007.0206136378.

Adding to 1021210054 its reverse (4500121201), we get a palindrome (5521331255).

The spelling of 1021210054 in words is "one billion, twenty-one million, two hundred ten thousand, fifty-four".