1022001011 has 4 divisors (see below), whose sum is σ = 1024896552. Its totient is φ = 1019105472.

The previous prime is 1022001007. The next prime is 1022001023. The reversal of 1022001011 is 1101002201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022001011 - 2² = 1022001007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022001011.

It is not an unprimeable number, because it can be changed into a prime (1022001091) 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, 1447241 + ... + 1447946.

It is an arithmetic number, because the mean of its divisors is an integer number (256224138).

Almost surely, 2^1022001011 is an apocalyptic number.

1022001011 is a deficient number, since it is larger than the sum of its proper divisors (2895541).

1022001011 is an equidigital number, since it uses as much as digits as its factorization.

1022001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895540.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1022001011 is about 31968.7505386119. The cubic root of 1022001011 is about 1007.2805354984.

Adding to 1022001011 its reverse (1101002201), we get a palindrome (2123003212).

The spelling of 1022001011 in words is "one billion, twenty-two million, one thousand, eleven".