121111220002 has 4 divisors (see below), whose sum is σ = 181666830006. Its totient is φ = 60555610000.

The previous prime is 121111219967. The next prime is 121111220039. The reversal of 121111220002 is 200022111121.

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., 110788456801 + 10322763201 = 332849^2 + 101601^2 .

It is a super-2 number, since 2×121111220002² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30277804999 + ... + 30277805002.

Almost surely, 2^121111220002 is an apocalyptic number.

121111220002 is a deficient number, since it is larger than the sum of its proper divisors (60555610004).

121111220002 is an equidigital number, since it uses as much as digits as its factorization.

121111220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60555610003.

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

Adding to 121111220002 its reverse (200022111121), we get a palindrome (321133331123).

The spelling of 121111220002 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, two".