1021455066 has 16 divisors (see below), whose sum is σ = 2073402144. Its totient is φ = 335403024.

The previous prime is 1021455059. The next prime is 1021455073. The reversal of 1021455066 is 6605541201.

It is an interprime number because it is at equal distance from previous prime (1021455059) and next prime (1021455073).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270065 + ... + 1270868.

It is an arithmetic number, because the mean of its divisors is an integer number (129587634).

Almost surely, 2^1021455066 is an apocalyptic number.

1021455066 is an abundant number, since it is smaller than the sum of its proper divisors (1051947078).

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

1021455066 is a wasteful number, since it uses less digits than its factorization.

1021455066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541005.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1021455066 is about 31960.2106688927. The cubic root of 1021455066 is about 1007.1011430724.

Adding to 1021455066 its reverse (6605541201), we get a palindrome (7626996267).

The spelling of 1021455066 in words is "one billion, twenty-one million, four hundred fifty-five thousand, sixty-six".