1221014011320 has 64 divisors (see below), whose sum is σ = 4070046708000. Its totient is φ = 325603736064.

The previous prime is 1221014011313. The next prime is 1221014011331. The reversal of 1221014011320 is 231104101221.

1221014011320 is a `hidden beast` number, since 122 + 10 + 1 + 401 + 132 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1221014011293 and 1221014011302.

It is a congruent number.

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, 565283185 + ... + 565285344.

Almost surely, 2^{1221014011320} is an apocalyptic number.

1221014011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221014011320 is an abundant number, since it is smaller than the sum of its proper divisors (2849032696680).

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

1221014011320 is a wasteful number, since it uses less digits than its factorization.

1221014011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130568549 (or 1130568539 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221014011320 its reverse (231104101221), we get a palindrome (1452118112541).

The spelling of 1221014011320 in words is "one trillion, two hundred twenty-one billion, fourteen million, eleven thousand, three hundred twenty".