1020202011 has 24 divisors (see below), whose sum is σ = 1561556880. Its totient is φ = 639614976.

The previous prime is 1020202009. The next prime is 1020202019. The reversal of 1020202011 is 1102020201.

It is not a de Polignac number, because 1020202011 - 2¹ = 1020202009 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 = 1020201984 and 1020202002.

It is not an unprimeable number, because it can be changed into a prime (1020202019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304795 + ... + 308123.

It is an arithmetic number, because the mean of its divisors is an integer number (65064870).

Almost surely, 2^1020202011 is an apocalyptic number.

1020202011 is a deficient number, since it is larger than the sum of its proper divisors (541354869).

1020202011 is a wasteful number, since it uses less digits than its factorization.

1020202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355 (or 5352 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1020202011 is about 31940.6012936513. The cubic root of 1020202011 is about 1006.6891590494.

Adding to 1020202011 its reverse (1102020201), we get a palindrome (2122222212).

The spelling of 1020202011 in words is "one billion, twenty million, two hundred two thousand, eleven".