202121002202011 has 4 divisors (see below), whose sum is σ = 210908871862992. Its totient is φ = 193333132541032.

The previous prime is 202121002201927. The next prime is 202121002202051. The reversal of 202121002202011 is 110202200121202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202121002202011 - 2¹⁵ = 202121002169243 is a prime.

It is a super-2 number, since 2×202121002202011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121002202051) 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, 4393934830456 + ... + 4393934830501.

It is an arithmetic number, because the mean of its divisors is an integer number (52727217965748).

Almost surely, 2^{202121002202011} is an apocalyptic number.

202121002202011 is a deficient number, since it is larger than the sum of its proper divisors (8787869660981).

202121002202011 is an equidigital number, since it uses as much as digits as its factorization.

202121002202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787869660980.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202121002202011 its reverse (110202200121202), we get a palindrome (312323202323213).

The spelling of 202121002202011 in words is "two hundred two trillion, one hundred twenty-one billion, two million, two hundred two thousand, eleven".