20210002011 has 16 divisors (see below), whose sum is σ = 30052058400. Its totient is φ = 13423243104.

The previous prime is 20210001991. The next prime is 20210002051. The reversal of 20210002011 is 11020001202.

It is not a de Polignac number, because 20210002011 - 2¹¹ = 20209999963 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 = 20210001984 and 20210002002.

It is not an unprimeable number, because it can be changed into a prime (20210002051) 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, 1384036 + ... + 1398561.

It is an arithmetic number, because the mean of its divisors is an integer number (1878253650).

Almost surely, 2^20210002011 is an apocalyptic number.

20210002011 is a deficient number, since it is larger than the sum of its proper divisors (9842056389).

20210002011 is a wasteful number, since it uses less digits than its factorization.

20210002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782875 (or 2782869 counting only the distinct ones).

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

Adding to 20210002011 its reverse (11020001202), we get a palindrome (31230003213).

The spelling of 20210002011 in words is "twenty billion, two hundred ten million, two thousand, eleven".