1020211011 has 16 divisors (see below), whose sum is σ = 1511915520. Its totient is φ = 679919400.

The previous prime is 1020210973. The next prime is 1020211013. The reversal of 1020211011 is 1101120201.

It is a happy number.

It is not a de Polignac number, because 1020211011 - 2¹⁰ = 1020209987 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1020210984 and 1020211002.

It is not an unprimeable number, because it can be changed into a prime (1020211013) 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, 162786 + ... + 168936.

It is an arithmetic number, because the mean of its divisors is an integer number (94494720).

Almost surely, 2^1020211011 is an apocalyptic number.

1020211011 is a deficient number, since it is larger than the sum of its proper divisors (491704509).

1020211011 is an equidigital number, since it uses as much as digits as its factorization.

1020211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303 (or 12297 counting only the distinct ones).

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

The square root of 1020211011 is about 31940.7421798555. The cubic root of 1020211011 is about 1006.6921193049.

Adding to 1020211011 its reverse (1101120201), we get a palindrome (2121331212).

The spelling of 1020211011 in words is "one billion, twenty million, two hundred eleven thousand, eleven".