1220338655722 has 4 divisors (see below), whose sum is σ = 1830507983586. Its totient is φ = 610169327860.

The previous prime is 1220338655597. The next prime is 1220338655771. The reversal of 1220338655722 is 2275568330221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 922562171001 + 297776484721 = 960501^2 + 545689^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305084663929 + ... + 305084663932.

Almost surely, 2^{1220338655722} is an apocalyptic number.

1220338655722 is a deficient number, since it is larger than the sum of its proper divisors (610169327864).

1220338655722 is an equidigital number, since it uses as much as digits as its factorization.

1220338655722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610169327863.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 1220338655722 in words is "one trillion, two hundred twenty billion, three hundred thirty-eight million, six hundred fifty-five thousand, seven hundred twenty-two".