1212122221202 has 8 divisors (see below), whose sum is σ = 1818194692656. Its totient is φ = 606057323652.

The previous prime is 1212122221157. The next prime is 1212122221207. The reversal of 1212122221202 is 2021222212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1212122221207) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1474868 + ... + 2144639.

It is an arithmetic number, because the mean of its divisors is an integer number (227274336582).

Almost surely, 2^{1212122221202} is an apocalyptic number.

1212122221202 is a deficient number, since it is larger than the sum of its proper divisors (606072471454).

1212122221202 is a wasteful number, since it uses less digits than its factorization.

1212122221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786952.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212122221202 its reverse (2021222212121), we get a palindrome (3233344433323).

The spelling of 1212122221202 in words is "one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred two".