201020100021011 has 2 divisors, whose sum is σ = 201020100021012. Its totient is φ = 201020100021010.

The previous prime is 201020100020989. The next prime is 201020100021017. The reversal of 201020100021011 is 110120001020102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201020100021011 - 2¹⁰ = 201020100019987 is a prime.

It is a super-2 number, since 2×201020100021011² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201020100020983 and 201020100021001.

It is not a weakly prime, because it can be changed into another prime (201020100021017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510050010505 + 100510050010506.

It is an arithmetic number, because the mean of its divisors is an integer number (100510050010506).

Almost surely, 2^{201020100021011} is an apocalyptic number.

201020100021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020100021011 is an equidigital number, since it uses as much as digits as its factorization.

201020100021011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201020100021011 its reverse (110120001020102), we get a palindrome (311140101041113).

Subtracting from 201020100021011 its reverse (110120001020102), we obtain a palindrome (90900099000909).

The spelling of 201020100021011 in words is "two hundred one trillion, twenty billion, one hundred million, twenty-one thousand, eleven".