1221120200002 has 32 divisors (see below), whose sum is σ = 1856996668800. Its totient is φ = 602193392640.

The previous prime is 1221120199993. The next prime is 1221120200021. The reversal of 1221120200002 is 2000020211221.

It is a happy number.

It is a super-2 number, since 2×1221120200002² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27121353 + ... + 27166339.

It is an arithmetic number, because the mean of its divisors is an integer number (58031145900).

Almost surely, 2^{1221120200002} is an apocalyptic number.

1221120200002 is a deficient number, since it is larger than the sum of its proper divisors (635876468798).

1221120200002 is a wasteful number, since it uses less digits than its factorization.

1221120200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45786.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1221120200002 its reverse (2000020211221), we get a palindrome (3221140411223).

The spelling of 1221120200002 in words is "one trillion, two hundred twenty-one billion, one hundred twenty million, two hundred thousand, two".