1220550215 has 16 divisors (see below), whose sum is σ = 1543108320. Its totient is φ = 924232320.

The previous prime is 1220550211. The next prime is 1220550217. The reversal of 1220550215 is 5120550221.

It is not a de Polignac number, because 1220550215 - 2² = 1220550211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220550211) 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, 116285 + ... + 126345.

It is an arithmetic number, because the mean of its divisors is an integer number (96444270).

Almost surely, 2^1220550215 is an apocalyptic number.

1220550215 is a deficient number, since it is larger than the sum of its proper divisors (322558105).

1220550215 is a wasteful number, since it uses less digits than its factorization.

1220550215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11362.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1220550215 is about 34936.3738101137. The cubic root of 1220550215 is about 1068.6903401828.

The spelling of 1220550215 in words is "one billion, two hundred twenty million, five hundred fifty thousand, two hundred fifteen".