1220011012320 has 48 divisors (see below), whose sum is σ = 3843034690320. Its totient is φ = 325336269824.

The previous prime is 1220011012291. The next prime is 1220011012321. The reversal of 1220011012320 is 232101100221.

It is a tau number, because it is divible by the number of its divisors (48).

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 1220011012320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220011012321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270844325 + ... + 1270845284.

It is an arithmetic number, because the mean of its divisors is an integer number (80063222715).

Almost surely, 2^{1220011012320} is an apocalyptic number.

1220011012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220011012320 is an abundant number, since it is smaller than the sum of its proper divisors (2623023678000).

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

1220011012320 is a wasteful number, since it uses less digits than its factorization.

1220011012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541689627 (or 2541689619 counting only the distinct ones).

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

Adding to 1220011012320 its reverse (232101100221), we get a palindrome (1452112112541).

The spelling of 1220011012320 in words is "one trillion, two hundred twenty billion, eleven million, twelve thousand, three hundred twenty".