1220155506562 has 16 divisors (see below), whose sum is σ = 1855355374080. Its totient is φ = 601704169632.

The previous prime is 1220155506529. The next prime is 1220155506599. The reversal of 1220155506562 is 2656055510221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6652239 + ... + 6833197.

It is an arithmetic number, because the mean of its divisors is an integer number (115959710880).

Almost surely, 2^{1220155506562} is an apocalyptic number.

1220155506562 is a deficient number, since it is larger than the sum of its proper divisors (635199867518).

1220155506562 is a wasteful number, since it uses less digits than its factorization.

1220155506562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227217.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 1220155506562 in words is "one trillion, two hundred twenty billion, one hundred fifty-five million, five hundred six thousand, five hundred sixty-two".