1220155105502 has 16 divisors (see below), whose sum is σ = 1888557697152. Its totient is φ = 590853098880.

The previous prime is 1220155105457. The next prime is 1220155105511. The reversal of 1220155105502 is 2055015510221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54295118 + ... + 54317585.

It is an arithmetic number, because the mean of its divisors is an integer number (118034856072).

Almost surely, 2^{1220155105502} is an apocalyptic number.

1220155105502 is a deficient number, since it is larger than the sum of its proper divisors (668402591650).

1220155105502 is a wasteful number, since it uses less digits than its factorization.

1220155105502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108612883.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 1220155105502 in words is "one trillion, two hundred twenty billion, one hundred fifty-five million, one hundred five thousand, five hundred two".