1220121000212 has 12 divisors (see below), whose sum is σ = 2247591316320. Its totient is φ = 577952052696.

The previous prime is 1220121000187. The next prime is 1220121000247. The reversal of 1220121000212 is 2120001210221.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 8027111768 + ... + 8027111919.

It is an arithmetic number, because the mean of its divisors is an integer number (187299276360).

Almost surely, 2^{1220121000212} is an apocalyptic number.

It is an amenable number.

1220121000212 is a deficient number, since it is larger than the sum of its proper divisors (1027470316108).

1220121000212 is a wasteful number, since it uses less digits than its factorization.

1220121000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16054223710 (or 16054223708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220121000212 its reverse (2120001210221), we get a palindrome (3340122210433).

The spelling of 1220121000212 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.