1220827027 has 16 divisors (see below), whose sum is σ = 1453012992. Its totient is φ = 1003685760.

The previous prime is 1220826989. The next prime is 1220827031. The reversal of 1220827027 is 7207280221.

It is not a de Polignac number, because 1220827027 - 2¹⁹ = 1220302739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220827027.

It is not an unprimeable number, because it can be changed into a prime (1220827427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373 + ... + 49414.

It is an arithmetic number, because the mean of its divisors is an integer number (90813312).

Almost surely, 2^1220827027 is an apocalyptic number.

1220827027 is a deficient number, since it is larger than the sum of its proper divisors (232185965).

1220827027 is a wasteful number, since it uses less digits than its factorization.

1220827027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49938.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 1220827027 is about 34940.3352445279. The cubic root of 1220827027 is about 1068.7711245007.

The spelling of 1220827027 in words is "one billion, two hundred twenty million, eight hundred twenty-seven thousand, twenty-seven".