1220656610012 has 18 divisors (see below), whose sum is σ = 2484908099352. Its totient is φ = 523138547064.

The previous prime is 1220656610009. The next prime is 1220656610023. The reversal of 1220656610012 is 2100166560221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3113919728 + ... + 3113920119.

It is an arithmetic number, because the mean of its divisors is an integer number (138050449964).

Almost surely, 2^{1220656610012} is an apocalyptic number.

It is an amenable number.

1220656610012 is an abundant number, since it is smaller than the sum of its proper divisors (1264251489340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220656610012 is a wasteful number, since it uses less digits than its factorization.

1220656610012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227839865 (or 6227839856 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 1220656610012 in words is "one trillion, two hundred twenty billion, six hundred fifty-six million, six hundred ten thousand, twelve".