1220222211985 has 8 divisors (see below), whose sum is σ = 1673447605056. Its totient is φ = 836723802480.

The previous prime is 1220222211983. The next prime is 1220222212021. The reversal of 1220222211985 is 5891122220221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220222211985 - 2¹ = 1220222211983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220222211983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17431745851 + ... + 17431745920.

It is an arithmetic number, because the mean of its divisors is an integer number (209180950632).

Almost surely, 2^{1220222211985} is an apocalyptic number.

It is an amenable number.

1220222211985 is a deficient number, since it is larger than the sum of its proper divisors (453225393071).

1220222211985 is an equidigital number, since it uses as much as digits as its factorization.

1220222211985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34863491783.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 1220222211985 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, nine hundred eighty-five".