1222015779232 has 12 divisors (see below), whose sum is σ = 2405843565426. Its totient is φ = 611007889600.

The previous prime is 1222015779211. The next prime is 1222015779233. The reversal of 1222015779232 is 2329775102221.

It can be written as a sum of positive squares in only one way, i.e., 1146963889296 + 75051889936 = 1070964^2 + 273956^2 .

It is not an unprimeable number, because it can be changed into a prime (1222015779233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19093996519 + ... + 19093996582.

Almost surely, 2^{1222015779232} is an apocalyptic number.

It is an amenable number.

1222015779232 is a deficient number, since it is larger than the sum of its proper divisors (1183827786194).

1222015779232 is an equidigital number, since it uses as much as digits as its factorization.

1222015779232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38187993111 (or 38187993103 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 1222015779232 in words is "one trillion, two hundred twenty-two billion, fifteen million, seven hundred seventy-nine thousand, two hundred thirty-two".