1401220171000 has 128 divisors (see below), whose sum is σ = 3532337040960. Its totient is φ = 517188672000.

The previous prime is 1401220170989. The next prime is 1401220171027. The reversal of 1401220171000 is 1710221041.

It is a congruent 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, 39463255 + ... + 39498745.

Almost surely, 2^{1401220171000} is an apocalyptic number.

1401220171000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401220171000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766168520480).

1401220171000 is an abundant number, since it is smaller than the sum of its proper divisors (2131116869960).

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

1401220171000 is a wasteful number, since it uses less digits than its factorization.

1401220171000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38562 (or 38548 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 1401220171000 its reverse (1710221041), we get a palindrome (1402930392041).

The spelling of 1401220171000 in words is "one trillion, four hundred one billion, two hundred twenty million, one hundred seventy-one thousand".