121220220032 has 32 divisors (see below), whose sum is σ = 241511341500. Its totient is φ = 60605608960.

The previous prime is 121220219983. The next prime is 121220220047. The reversal of 121220220032 is 230022022121.

It can be written as a sum of positive squares in 2 ways, for example, as 107358454336 + 13861765696 = 327656^2 + 117736^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296982 + ... + 2349162.

Almost surely, 2^121220220032 is an apocalyptic number.

It is an amenable number.

121220220032 is a deficient number, since it is larger than the sum of its proper divisors (120291121468).

121220220032 is an equidigital number, since it uses as much as digits as its factorization.

121220220032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70344 (or 70332 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 121220220032 its reverse (230022022121), we get a palindrome (351242242153).

The spelling of 121220220032 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, thirty-two".