20221001011 has 4 divisors (see below), whose sum is σ = 21100174992. Its totient is φ = 19341827032.

The previous prime is 20221000993. The next prime is 20221001069. The reversal of 20221001011 is 11010012202.

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 20221001011 - 2¹³ = 20220992819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221001111) 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, 439586956 + ... + 439587001.

It is an arithmetic number, because the mean of its divisors is an integer number (5275043748).

Almost surely, 2^20221001011 is an apocalyptic number.

20221001011 is a deficient number, since it is larger than the sum of its proper divisors (879173981).

20221001011 is an equidigital number, since it uses as much as digits as its factorization.

20221001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879173980.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20221001011 its reverse (11010012202), we get a palindrome (31231013213).

The spelling of 20221001011 in words is "twenty billion, two hundred twenty-one million, one thousand, eleven".