1222100120002 has 4 divisors (see below), whose sum is σ = 1833150180006. Its totient is φ = 611050060000.

The previous prime is 1222100119979. The next prime is 1222100120009. The reversal of 1222100120002 is 2000210012221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1214974903081 + 7125216921 = 1102259^2 + 84411^2 .

It is not an unprimeable number, because it can be changed into a prime (1222100120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305525029999 + ... + 305525030002.

Almost surely, 2^{1222100120002} is an apocalyptic number.

1222100120002 is a deficient number, since it is larger than the sum of its proper divisors (611050060004).

1222100120002 is an equidigital number, since it uses as much as digits as its factorization.

1222100120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611050060003.

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

Adding to 1222100120002 its reverse (2000210012221), we get a palindrome (3222310132223).

The spelling of 1222100120002 in words is "one trillion, two hundred twenty-two billion, one hundred million, one hundred twenty thousand, two".