1010221011 has 8 divisors (see below), whose sum is σ = 1496623760. Its totient is φ = 673480656.

The previous prime is 1010221001. The next prime is 1010221021. The reversal of 1010221011 is 1101220101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1010221001) and next prime (1010221021).

It is not a de Polignac number, because 1010221011 - 2⁹ = 1010220499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010220984 and 1010221002.

It is not an unprimeable number, because it can be changed into a prime (1010221001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18707770 + ... + 18707823.

It is an arithmetic number, because the mean of its divisors is an integer number (187077970).

Almost surely, 2^1010221011 is an apocalyptic number.

1010221011 is a deficient number, since it is larger than the sum of its proper divisors (486402749).

1010221011 is an equidigital number, since it uses as much as digits as its factorization.

1010221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37415602 (or 37415596 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1010221011 is about 31783.9741221893. The cubic root of 1010221011 is about 1003.3954614592.

Adding to 1010221011 its reverse (1101220101), we get a palindrome (2111441112).

It can be divided in two parts, 10102 and 21011, that added together give a palindrome (31113).

The spelling of 1010221011 in words is "one billion, ten million, two hundred twenty-one thousand, eleven".