1220155933 has 8 divisors (see below), whose sum is σ = 1228537856. Its totient is φ = 1211792400.

The previous prime is 1220155921. The next prime is 1220155969. The reversal of 1220155933 is 3395510221.

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 1220155933 - 2⁵ = 1220155901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220155895 and 1220155904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220155903) 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, 144868 + ... + 153058.

It is an arithmetic number, because the mean of its divisors is an integer number (153567232).

Almost surely, 2^1220155933 is an apocalyptic number.

It is an amenable number.

1220155933 is a deficient number, since it is larger than the sum of its proper divisors (8381923).

1220155933 is an equidigital number, since it uses as much as digits as its factorization.

1220155933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1220155933 is about 34930.7304962264. The cubic root of 1220155933 is about 1068.5752525391.

The spelling of 1220155933 in words is "one billion, two hundred twenty million, one hundred fifty-five thousand, nine hundred thirty-three".