201001221021012 has 24 divisors (see below), whose sum is σ = 475608522981312. Its totient is φ = 66056739302400.

The previous prime is 201001221020953. The next prime is 201001221021043. The reversal of 201001221021012 is 210120122100102.

It is a junction number, because it is equal to n+sod(n) for n = 201001221020982 and 201001221021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117958462189 + ... + 117958463892.

It is an arithmetic number, because the mean of its divisors is an integer number (19817021790888).

Almost surely, 2^{201001221021012} is an apocalyptic number.

It is an amenable number.

201001221021012 is an abundant number, since it is smaller than the sum of its proper divisors (274607301960300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201001221021012 is a wasteful number, since it uses less digits than its factorization.

201001221021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235916926159 (or 235916926157 counting only the distinct ones).

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

Adding to 201001221021012 its reverse (210120122100102), we get a palindrome (411121343121114).

The spelling of 201001221021012 in words is "two hundred one trillion, one billion, two hundred twenty-one million, twenty-one thousand, twelve".