201321401010 has 64 divisors (see below), whose sum is σ = 491104207872. Its totient is φ = 52806638016.

The previous prime is 201321400991. The next prime is 201321401041. The reversal of 201321401010 is 10104123102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

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, 1299507 + ... + 1446153.

It is an arithmetic number, because the mean of its divisors is an integer number (7673503248).

Almost surely, 2^201321401010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201321401010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245552103936).

201321401010 is an abundant number, since it is smaller than the sum of its proper divisors (289782806862).

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

201321401010 is a wasteful number, since it uses less digits than its factorization.

201321401010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147407.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201321401010 its reverse (10104123102), we get a palindrome (211425524112).

The spelling of 201321401010 in words is "two hundred one billion, three hundred twenty-one million, four hundred one thousand, ten".