1260221250000 has 160 divisors (see below), whose sum is σ = 4069466144640. Its totient is φ = 336058000000.

The previous prime is 1260221249983. The next prime is 1260221250011. The reversal of 1260221250000 is 521220621.

It is a happy number.

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, 3581971 + ... + 3918029.

It is an arithmetic number, because the mean of its divisors is an integer number (25434163404).

Almost surely, 2^{1260221250000} is an apocalyptic number.

1260221250000 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 1260221250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2034733072320).

1260221250000 is an abundant number, since it is smaller than the sum of its proper divisors (2809244894640).

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

1260221250000 is an frugal number, since it uses more digits than its factorization.

1260221250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336105 (or 336069 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1260221250000 its reverse (521220621), we get a palindrome (1260742470621).

The spelling of 1260221250000 in words is "one trillion, two hundred sixty billion, two hundred twenty-one million, two hundred fifty thousand".