101211021020011 has 4 divisors (see below), whose sum is σ = 115669738308592. Its totient is φ = 86752303731432.

The previous prime is 101211021019991. The next prime is 101211021020047. The reversal of 101211021020011 is 110020120112101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101211021020011 - 2³⁷ = 101073582066539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101211021019973 and 101211021020000.

It is not an unprimeable number, because it can be changed into a prime (101211021020071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7229358644280 + ... + 7229358644293.

It is an arithmetic number, because the mean of its divisors is an integer number (28917434577148).

Almost surely, 2^{101211021020011} is an apocalyptic number.

101211021020011 is a deficient number, since it is larger than the sum of its proper divisors (14458717288581).

101211021020011 is an equidigital number, since it uses as much as digits as its factorization.

101211021020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458717288580.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101211021020011 its reverse (110020120112101), we get a palindrome (211231141132112).

The spelling of 101211021020011 in words is "one hundred one trillion, two hundred eleven billion, twenty-one million, twenty thousand, eleven".