1220888471 has 8 divisors (see below), whose sum is σ = 1338781584. Its totient is φ = 1104145920.

The previous prime is 1220888441. The next prime is 1220888477. The reversal of 1220888471 is 1748880221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220888471 is a prime.

It is a super-3 number, since 3×1220888471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220888477) 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, 285416 + ... + 289661.

It is an arithmetic number, because the mean of its divisors is an integer number (167347698).

Almost surely, 2^1220888471 is an apocalyptic number.

1220888471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220888471 is a deficient number, since it is larger than the sum of its proper divisors (117893113).

1220888471 is a wasteful number, since it uses less digits than its factorization.

1220888471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575281.

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 1220888471 is about 34941.2145037919. The cubic root of 1220888471 is about 1068.7890545513.

The spelling of 1220888471 in words is "one billion, two hundred twenty million, eight hundred eighty-eight thousand, four hundred seventy-one".