1010221111 has 16 divisors (see below), whose sum is σ = 1079654400. Its totient is φ = 943195968.

The previous prime is 1010221103. The next prime is 1010221123. The reversal of 1010221111 is 1111220101.

1010221111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1010221111 - 2³ = 1010221103 is a prime.

It is a super-4 number, since 4×1010221111⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010221171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158590 + ... + 164836.

It is an arithmetic number, because the mean of its divisors is an integer number (67478400).

Almost surely, 2^1010221111 is an apocalyptic number.

1010221111 is a deficient number, since it is larger than the sum of its proper divisors (69433289).

1010221111 is an equidigital number, since it uses as much as digits as its factorization.

1010221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1010221111 is about 31783.9756953091. The cubic root of 1010221111 is about 1003.3954945673.

Adding to 1010221111 its reverse (1111220101), we get a palindrome (2121441212).

It can be divided in two parts, 10102 and 21111, that added together give a palindrome (31213).

The spelling of 1010221111 in words is "one billion, ten million, two hundred twenty-one thousand, one hundred eleven".