1020221211 has 8 divisors (see below), whose sum is σ = 1360448784. Its totient is φ = 680070560.

The previous prime is 1020221179. The next prime is 1020221231. The reversal of 1020221211 is 1121220201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020221211 - 2⁵ = 1020221179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020221231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29005 + ... + 53681.

It is an arithmetic number, because the mean of its divisors is an integer number (170056098).

Almost surely, 2^1020221211 is an apocalyptic number.

1020221211 is a deficient number, since it is larger than the sum of its proper divisors (340227573).

1020221211 is a wasteful number, since it uses less digits than its factorization.

1020221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38461.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1020221211 is about 31940.9018501357. The cubic root of 1020221211 is about 1006.6954742401.

Adding to 1020221211 its reverse (1121220201), we get a palindrome (2141441412).

It can be divided in two parts, 10202 and 21211, that added together give a palindrome (31413).

The spelling of 1020221211 in words is "one billion, twenty million, two hundred twenty-one thousand, two hundred eleven".