1220111210002 has 4 divisors (see below), whose sum is σ = 1830166815006. Its totient is φ = 610055605000.

The previous prime is 1220111209979. The next prime is 1220111210027. The reversal of 1220111210002 is 2000121110221.

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., 1007395623481 + 212715586521 = 1003691^2 + 461211^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305027802499 + ... + 305027802502.

Almost surely, 2^{1220111210002} is an apocalyptic number.

1220111210002 is a deficient number, since it is larger than the sum of its proper divisors (610055605004).

1220111210002 is an equidigital number, since it uses as much as digits as its factorization.

1220111210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610055605003.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220111210002 its reverse (2000121110221), we get a palindrome (3220232320223).

The spelling of 1220111210002 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred ten thousand, two".