1221120032002 has 8 divisors (see below), whose sum is σ = 1972578513276. Its totient is φ = 563593860912.

The previous prime is 1221120031991. The next prime is 1221120032029. The reversal of 1221120032002 is 2002300211221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1215261507321 + 5858524681 = 1102389^2 + 76541^2 .

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

It is a super-3 number, since 3×1221120032002³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 23483077513 + ... + 23483077564.

Almost surely, 2^{1221120032002} is an apocalyptic number.

1221120032002 is a deficient number, since it is larger than the sum of its proper divisors (751458481274).

1221120032002 is a wasteful number, since it uses less digits than its factorization.

1221120032002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46966155092.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1221120032002 its reverse (2002300211221), we get a palindrome (3223420243223).

The spelling of 1221120032002 in words is "one trillion, two hundred twenty-one billion, one hundred twenty million, thirty-two thousand, two".