202121211010011 has 16 divisors (see below), whose sum is σ = 276787476511008. Its totient is φ = 131101443475200.

The previous prime is 202121211010007. The next prime is 202121211010027. The reversal of 202121211010011 is 110010112121202.

It is a happy number.

It is not a de Polignac number, because 202121211010011 - 2² = 202121211010007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202121211010051) 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, 25737970 + ... + 32660151.

It is an arithmetic number, because the mean of its divisors is an integer number (17299217281938).

Almost surely, 2^{202121211010011} is an apocalyptic number.

202121211010011 is a deficient number, since it is larger than the sum of its proper divisors (74666265500997).

202121211010011 is a wasteful number, since it uses less digits than its factorization.

202121211010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58429342.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 202121211010011 its reverse (110010112121202), we get a palindrome (312131323131213).

The spelling of 202121211010011 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred eleven million, ten thousand, eleven".