210201221121011 has 4 divisors (see below), whose sum is σ = 210203101840992. Its totient is φ = 210199340401032.

The previous prime is 210201221120929. The next prime is 210201221121013. The reversal of 210201221121011 is 110121122102012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210201221121011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210201221121013) 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, 940192331 + ... + 940415876.

It is an arithmetic number, because the mean of its divisors is an integer number (52550775460248).

Almost surely, 2^{210201221121011} is an apocalyptic number.

210201221121011 is a deficient number, since it is larger than the sum of its proper divisors (1880719981).

210201221121011 is a wasteful number, since it uses less digits than its factorization.

210201221121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880719980.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210201221121011 its reverse (110121122102012), we get a palindrome (320322343223023).

The spelling of 210201221121011 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".