1220141665531 has 8 divisors (see below), whose sum is σ = 1230080301728. Its totient is φ = 1210227480000.

The previous prime is 1220141665507. The next prime is 1220141665711. The reversal of 1220141665531 is 1355661410221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220141665531 - 2⁷ = 1220141665403 is a prime.

It is a super-2 number, since 2×1220141665531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220141660531) 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, 6012450 + ... + 6212071.

It is an arithmetic number, because the mean of its divisors is an integer number (153760037716).

Almost surely, 2^{1220141665531} is an apocalyptic number.

1220141665531 is a deficient number, since it is larger than the sum of its proper divisors (9938636197).

1220141665531 is a wasteful number, since it uses less digits than its factorization.

1220141665531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12225333.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 1220141665531 in words is "one trillion, two hundred twenty billion, one hundred forty-one million, six hundred sixty-five thousand, five hundred thirty-one".