1020021206 has 8 divisors (see below), whose sum is σ = 1567349784. Its totient is φ = 497571280.

The previous prime is 1020021187. The next prime is 1020021209. The reversal of 1020021206 is 6021200201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020021209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6219560 + ... + 6219723.

It is an arithmetic number, because the mean of its divisors is an integer number (195918723).

Almost surely, 2^1020021206 is an apocalyptic number.

1020021206 is a deficient number, since it is larger than the sum of its proper divisors (547328578).

1020021206 is a wasteful number, since it uses less digits than its factorization.

1020021206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12439326.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1020021206 is about 31937.7708364250. The cubic root of 1020021206 is about 1006.6296854729.

Adding to 1020021206 its reverse (6021200201), we get a palindrome (7041221407).

The spelling of 1020021206 in words is "one billion, twenty million, twenty-one thousand, two hundred six".