20202001011 has 24 divisors (see below), whose sum is σ = 29987573616. Its totient is φ = 13098274560.

The previous prime is 20202000997. The next prime is 20202001013. The reversal of 20202001011 is 11010020202.

It is not a de Polignac number, because 20202001011 - 2¹⁷ = 20201869939 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 = 20202000984 and 20202001002.

It is not an unprimeable number, because it can be changed into a prime (20202001013) 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, 21850 + ... + 202191.

It is an arithmetic number, because the mean of its divisors is an integer number (1249482234).

Almost surely, 2^20202001011 is an apocalyptic number.

20202001011 is a deficient number, since it is larger than the sum of its proper divisors (9785572605).

20202001011 is a wasteful number, since it uses less digits than its factorization.

20202001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224323 (or 224320 counting only the distinct ones).

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

Adding to 20202001011 its reverse (11010020202), we get a palindrome (31212021213).

The spelling of 20202001011 in words is "twenty billion, two hundred two million, one thousand, eleven".