1001301221220 has 48 divisors (see below), whose sum is σ = 2803686845568. Its totient is φ = 267009523200.

The previous prime is 1001301221213. The next prime is 1001301221329. The reversal of 1001301221220 is 221221031001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1001301221220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7450620 + ... + 7583820.

It is an arithmetic number, because the mean of its divisors is an integer number (58410142616).

Almost surely, 2^{1001301221220} is an apocalyptic number.

1001301221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001301221220 is an abundant number, since it is smaller than the sum of its proper divisors (1802385624348).

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

1001301221220 is a wasteful number, since it uses less digits than its factorization.

1001301221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258500 (or 258498 counting only the distinct ones).

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

Adding to 1001301221220 its reverse (221221031001), we get a palindrome (1222522252221).

The spelling of 1001301221220 in words is "one trillion, one billion, three hundred one million, two hundred twenty-one thousand, two hundred twenty".