11121212020201 has 4 divisors (see below), whose sum is σ = 11231323030404. Its totient is φ = 11011101010000.

The previous prime is 11121212020159. The next prime is 11121212020367. The reversal of 11121212020201 is 10202021212111.

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 10668558908176 + 452653112025 = 3266276^2 + 672795^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121212020201 - 2⁷ = 11121212020073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121212060201) 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, 55055504950 + ... + 55055505151.

It is an arithmetic number, because the mean of its divisors is an integer number (2807830757601).

Almost surely, 2^{11121212020201} is an apocalyptic number.

It is an amenable number.

11121212020201 is a deficient number, since it is larger than the sum of its proper divisors (110111010203).

11121212020201 is a wasteful number, since it uses less digits than its factorization.

11121212020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110111010202.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11121212020201 its reverse (10202021212111), we get a palindrome (21323233232312).

The spelling of 11121212020201 in words is "eleven trillion, one hundred twenty-one billion, two hundred twelve million, twenty thousand, two hundred one".