202121210111012 has 12 divisors (see below), whose sum is σ = 357686411152140. Its totient is φ = 99925092638976.

The previous prime is 202121210110997. The next prime is 202121210111021. The reversal of 202121210111012 is 210111012121202.

It can be written as a sum of positive squares in 2 ways, for example, as 48186171523876 + 153935038587136 = 6941626^2 + 12407056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283878103733 + ... + 283878104444.

It is an arithmetic number, because the mean of its divisors is an integer number (29807200929345).

Almost surely, 2^{202121210111012} is an apocalyptic number.

It is an amenable number.

202121210111012 is a deficient number, since it is larger than the sum of its proper divisors (155565201041128).

202121210111012 is a wasteful number, since it uses less digits than its factorization.

202121210111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567756208270 (or 567756208268 counting only the distinct ones).

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

Adding to 202121210111012 its reverse (210111012121202), we get a palindrome (412232222232214).

The spelling of 202121210111012 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred ten million, one hundred eleven thousand, twelve".