201321213412 has 96 divisors (see below), whose sum is σ = 405617756544. Its totient is φ = 86597683200.

The previous prime is 201321213391. The next prime is 201321213427. The reversal of 201321213412 is 214312123102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16864998 + ... + 16876930.

It is an arithmetic number, because the mean of its divisors is an integer number (4225184964).

Almost surely, 2^201321213412 is an apocalyptic number.

201321213412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201321213412 is an abundant number, since it is smaller than the sum of its proper divisors (204296543132).

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

201321213412 is a wasteful number, since it uses less digits than its factorization.

201321213412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12269 (or 12267 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 201321213412 its reverse (214312123102), we get a palindrome (415633336514).

The spelling of 201321213412 in words is "two hundred one billion, three hundred twenty-one million, two hundred thirteen thousand, four hundred twelve".