201212001201021 has 16 divisors (see below), whose sum is σ = 268467494118720. Its totient is φ = 134048938855680.

The previous prime is 201212001201017. The next prime is 201212001201037. The reversal of 201212001201021 is 120102100212102.

It is not a de Polignac number, because 201212001201021 - 2² = 201212001201017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212001202021) 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, 43516290 + ... + 47917548.

It is an arithmetic number, because the mean of its divisors is an integer number (16779218382420).

Almost surely, 2^{201212001201021} is an apocalyptic number.

It is an amenable number.

201212001201021 is a deficient number, since it is larger than the sum of its proper divisors (67255492917699).

201212001201021 is a wasteful number, since it uses less digits than its factorization.

201212001201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411756.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201212001201021 its reverse (120102100212102), we get a palindrome (321314101413123).

The spelling of 201212001201021 in words is "two hundred one trillion, two hundred twelve billion, one million, two hundred one thousand, twenty-one".