20002011211021 has 24 divisors (see below), whose sum is σ = 24529312721760. Its totient is φ = 16217661952800.

The previous prime is 20002011211019. The next prime is 20002011211081. The reversal of 20002011211021 is 12011211020002.

It is not a de Polignac number, because 20002011211021 - 2¹ = 20002011211019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002011210992 and 20002011211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002011211081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15636075 + ... + 16866856.

It is an arithmetic number, because the mean of its divisors is an integer number (1022054696740).

Almost surely, 2^{20002011211021} is an apocalyptic number.

It is an amenable number.

20002011211021 is a deficient number, since it is larger than the sum of its proper divisors (4527301510739).

20002011211021 is a wasteful number, since it uses less digits than its factorization.

20002011211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32503625 (or 32503618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20002011211021 its reverse (12011211020002), we get a palindrome (32013222231023).

The spelling of 20002011211021 in words is "twenty trillion, two billion, eleven million, two hundred eleven thousand, twenty-one".