1220021031120 has 40 divisors (see below), whose sum is σ = 3782065197216. Its totient is φ = 325338941568.

The previous prime is 1220021031079. The next prime is 1220021031139. The reversal of 1220021031120 is 211301200221.

It is a tau number, because it is divible by the number of its divisors (40).

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 1220021031120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2541710242 + ... + 2541710721.

Almost surely, 2^{1220021031120} is an apocalyptic number.

1220021031120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220021031120 is an abundant number, since it is smaller than the sum of its proper divisors (2562044166096).

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

1220021031120 is a wasteful number, since it uses less digits than its factorization.

1220021031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083420979 (or 5083420973 counting only the distinct ones).

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

Adding to 1220021031120 its reverse (211301200221), we get a palindrome (1431322231341).

The spelling of 1220021031120 in words is "one trillion, two hundred twenty billion, twenty-one million, thirty-one thousand, one hundred twenty".