1006471221 has 48 divisors (see below), whose sum is σ = 1605944448. Its totient is φ = 558835200.

The previous prime is 1006471217. The next prime is 1006471223. The reversal of 1006471221 is 1221746001.

It is not a de Polignac number, because 1006471221 - 2² = 1006471217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1006471191 and 1006471200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006471223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 761241 + ... + 762561.

It is an arithmetic number, because the mean of its divisors is an integer number (33457176).

Almost surely, 2^1006471221 is an apocalyptic number.

It is an amenable number.

1006471221 is a deficient number, since it is larger than the sum of its proper divisors (599473227).

1006471221 is a wasteful number, since it uses less digits than its factorization.

1006471221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1006471221 is about 31724.9305909406. The cubic root of 1006471221 is about 1002.1524373560.

The spelling of 1006471221 in words is "one billion, six million, four hundred seventy-one thousand, two hundred twenty-one".