1284220111932 has 18 divisors (see below), whose sum is σ = 3246223060808. Its totient is φ = 428073370632.

The previous prime is 1284220111921. The next prime is 1284220111961. The reversal of 1284220111932 is 2391110224821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 35672780887 = 1284220111932 / (1 + 2 + 8 + 4 + 2 + 2 + 0 + 1 + 1 + 1 + 9 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17836390408 + ... + 17836390479.

Almost surely, 2^{1284220111932} is an apocalyptic number.

1284220111932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1284220111932 is an abundant number, since it is smaller than the sum of its proper divisors (1962002948876).

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

1284220111932 is a wasteful number, since it uses less digits than its factorization.

1284220111932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35672780897 (or 35672780892 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 1284220111932 in words is "one trillion, two hundred eighty-four billion, two hundred twenty million, one hundred eleven thousand, nine hundred thirty-two".