1212021022012 has 48 divisors (see below), whose sum is σ = 2255663985120. Its totient is φ = 567860480000.

The previous prime is 1212021022001. The next prime is 1212021022021. The reversal of 1212021022012 is 2102201202121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46565562 + ... + 46591582.

It is an arithmetic number, because the mean of its divisors is an integer number (46992999690).

Almost surely, 2^{1212021022012} is an apocalyptic number.

It is an amenable number.

1212021022012 is a deficient number, since it is larger than the sum of its proper divisors (1043642963108).

1212021022012 is a wasteful number, since it uses less digits than its factorization.

1212021022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29022 (or 29020 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212021022012 its reverse (2102201202121), we get a palindrome (3314222224133).

The spelling of 1212021022012 in words is "one trillion, two hundred twelve billion, twenty-one million, twenty-two thousand, twelve".