201321120212 has 24 divisors (see below), whose sum is σ = 373541071680. Its totient is φ = 94611127680.

The previous prime is 201321120193. The next prime is 201321120257. The reversal of 201321120212 is 212021123102.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 1952864 + ... + 2053367.

It is an arithmetic number, because the mean of its divisors is an integer number (15564211320).

Almost surely, 2^201321120212 is an apocalyptic number.

It is an amenable number.

201321120212 is a deficient number, since it is larger than the sum of its proper divisors (172219951468).

201321120212 is a wasteful number, since it uses less digits than its factorization.

201321120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006991 (or 4006989 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201321120212 its reverse (212021123102), we get a palindrome (413342243314).

The spelling of 201321120212 in words is "two hundred one billion, three hundred twenty-one million, one hundred twenty thousand, two hundred twelve".