202102012212011 has 4 divisors (see below), whose sum is σ = 202102145504832. Its totient is φ = 202101878919192.

The previous prime is 202102012211989. The next prime is 202102012212073. The reversal of 202102012212011 is 110212210201202.

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-202102012212011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202102012215011) 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, 64345595 + ... + 67413348.

It is an arithmetic number, because the mean of its divisors is an integer number (50525536376208).

Almost surely, 2^{202102012212011} is an apocalyptic number.

202102012212011 is a deficient number, since it is larger than the sum of its proper divisors (133292821).

202102012212011 is a wasteful number, since it uses less digits than its factorization.

202102012212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133292820.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202102012212011 its reverse (110212210201202), we get a palindrome (312314222413213).

The spelling of 202102012212011 in words is "two hundred two trillion, one hundred two billion, twelve million, two hundred twelve thousand, eleven".