202020102011 has 24 divisors (see below), whose sum is σ = 254104834464. Its totient is φ = 157219695360.

The previous prime is 202020102007. The next prime is 202020102047. The reversal of 202020102011 is 110201020202.

It is a happy number.

It is not a de Polignac number, because 202020102011 - 2² = 202020102007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202020101983 and 202020102001.

It is not an unprimeable number, because it can be changed into a prime (202020102071) 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, 1327586 + ... + 1471911.

It is an arithmetic number, because the mean of its divisors is an integer number (10587701436).

Almost surely, 2^202020102011 is an apocalyptic number.

202020102011 is a deficient number, since it is larger than the sum of its proper divisors (52084732453).

202020102011 is a wasteful number, since it uses less digits than its factorization.

202020102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799591 (or 2799578 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202020102011 its reverse (110201020202), we get a palindrome (312221122213).

The spelling of 202020102011 in words is "two hundred two billion, twenty million, one hundred two thousand, eleven".