100211011211021 has 4 divisors (see below), whose sum is σ = 100764663206844. Its totient is φ = 99657359215200.

The previous prime is 100211011210931. The next prime is 100211011211033. The reversal of 100211011211021 is 120112110112001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3404873752900 + 96806137458121 = 1845230^2 + 9839011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100211011211021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100211011210987 and 100211011211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211011210021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276825997640 + ... + 276825998001.

It is an arithmetic number, because the mean of its divisors is an integer number (25191165801711).

Almost surely, 2^{100211011211021} is an apocalyptic number.

It is an amenable number.

100211011211021 is a deficient number, since it is larger than the sum of its proper divisors (553651995823).

100211011211021 is an equidigital number, since it uses as much as digits as its factorization.

100211011211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553651995822.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100211011211021 its reverse (120112110112001), we get a palindrome (220323121323022).

The spelling of 100211011211021 in words is "one hundred trillion, two hundred eleven billion, eleven million, two hundred eleven thousand, twenty-one".