1220372227 has 4 divisors (see below), whose sum is σ = 1220492416. Its totient is φ = 1220252040.

The previous prime is 1220372201. The next prime is 1220372233. The reversal of 1220372227 is 7222730221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220372227 - 2¹⁹ = 1219847939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220372195 and 1220372204.

It is not an unprimeable number, because it can be changed into a prime (1220372267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43299 + ... + 65692.

It is an arithmetic number, because the mean of its divisors is an integer number (305123104).

Almost surely, 2^1220372227 is an apocalyptic number.

1220372227 is a deficient number, since it is larger than the sum of its proper divisors (120189).

1220372227 is a wasteful number, since it uses less digits than its factorization.

1220372227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120188.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 1220372227 is about 34933.8264007824. The cubic root of 1220372227 is about 1068.6383900321.

The spelling of 1220372227 in words is "one billion, two hundred twenty million, three hundred seventy-two thousand, two hundred twenty-seven".