66021022 has 16 divisors (see below), whose sum is σ = 100558080. Its totient is φ = 32504472.

The previous prime is 66021019. The next prime is 66021037. The reversal of 66021022 is 22012066.

It is a congruent number.

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, 76429 + ... + 77287.

It is an arithmetic number, because the mean of its divisors is an integer number (6284880).

Almost surely, 2^66021022 is an apocalyptic number.

66021022 is a deficient number, since it is larger than the sum of its proper divisors (34537058).

66021022 is a wasteful number, since it uses less digits than its factorization.

66021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 66021022 is about 8125.3321162892. The cubic root of 66021022 is about 404.1669040468.

Adding to 66021022 its reverse (22012066), we get a palindrome (88033088).

The spelling of 66021022 in words is "sixty-six million, twenty-one thousand, twenty-two".