1222120002 has 16 divisors (see below), whose sum is σ = 2444584032. Its totient is φ = 407316000.

The previous prime is 1222119979. The next prime is 1222120007. The reversal of 1222120002 is 2000212221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222120002.

It is not an unprimeable number, because it can be changed into a prime (1222120007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70173 + ... + 85839.

It is an arithmetic number, because the mean of its divisors is an integer number (152786502).

Almost surely, 2^1222120002 is an apocalyptic number.

1222120002 is an abundant number, since it is smaller than the sum of its proper divisors (1222464030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222120002 is a wasteful number, since it uses less digits than its factorization.

1222120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28673.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1222120002 is about 34958.8329610701. The cubic root of 1222120002 is about 1069.1483023611.

Adding to 1222120002 its reverse (2000212221), we get a palindrome (3222332223).

It can be divided in two parts, 12221 and 20002, that multiplied together give a palindrome (244444442).

The spelling of 1222120002 in words is "one billion, two hundred twenty-two million, one hundred twenty thousand, two".