1212212020202 has 16 divisors (see below), whose sum is σ = 1861424806560. Its totient is φ = 591749513712.

The previous prime is 1212212020183. The next prime is 1212212020277. The reversal of 1212212020202 is 2020202122121.

It is a happy number.

It is a super-2 number, since 2×1212212020202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2910968 + ... + 3301235.

It is an arithmetic number, because the mean of its divisors is an integer number (116339050410).

Almost surely, 2^{1212212020202} is an apocalyptic number.

1212212020202 is a deficient number, since it is larger than the sum of its proper divisors (649212786358).

1212212020202 is a wasteful number, since it uses less digits than its factorization.

1212212020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214517.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212212020202 its reverse (2020202122121), we get a palindrome (3232414142323).

The spelling of 1212212020202 in words is "one trillion, two hundred twelve billion, two hundred twelve million, twenty thousand, two hundred two".