202001221211111 has 16 divisors (see below), whose sum is σ = 232904830939200. Its totient is φ = 171609227962368.

The previous prime is 202001221210973. The next prime is 202001221211129. The reversal of 202001221211111 is 111112122100202.

It is not a de Polignac number, because 202001221211111 - 2¹⁴ = 202001221194727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202001221211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001221211191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55251155 + ... + 58793643.

It is an arithmetic number, because the mean of its divisors is an integer number (14556551933700).

Almost surely, 2^{202001221211111} is an apocalyptic number.

202001221211111 is a deficient number, since it is larger than the sum of its proper divisors (30903609728089).

202001221211111 is a wasteful number, since it uses less digits than its factorization.

202001221211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614698.

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

Adding to 202001221211111 its reverse (111112122100202), we get a palindrome (313113343311313).

The spelling of 202001221211111 in words is "two hundred two trillion, one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred eleven".