1061221066 has 8 divisors (see below), whose sum is σ = 1592201664. Its totient is φ = 530487180.

The previous prime is 1061221027. The next prime is 1061221103. The reversal of 1061221066 is 6601221601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1061221066² = 2252380301844352712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061221066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50520 + ... + 68371.

It is an arithmetic number, because the mean of its divisors is an integer number (199025208).

Almost surely, 2^1061221066 is an apocalyptic number.

1061221066 is a deficient number, since it is larger than the sum of its proper divisors (530980598).

1061221066 is a wasteful number, since it uses less digits than its factorization.

1061221066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123356.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1061221066 is about 32576.3881668917. The cubic root of 1061221066 is about 1020.0041861933.

Adding to 1061221066 its reverse (6601221601), we get a palindrome (7662442667).

The spelling of 1061221066 in words is "one billion, sixty-one million, two hundred twenty-one thousand, sixty-six".