2121234321212 has 24 divisors (see below), whose sum is σ = 3773741476512. Its totient is φ = 1043161560000.

The previous prime is 2121234321121. The next prime is 2121234321253.

2121234321212 is nontrivially palindromic in base 10.

2121234321212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17325023 + ... + 17447030.

It is an arithmetic number, because the mean of its divisors is an integer number (157239228188).

Almost surely, 2^{2121234321212} is an apocalyptic number.

It is an amenable number.

2121234321212 is a deficient number, since it is larger than the sum of its proper divisors (1652507155300).

2121234321212 is a wasteful number, since it uses less digits than its factorization.

2121234321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34772309 (or 34772307 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The spelling of 2121234321212 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-four million, three hundred twenty-one thousand, two hundred twelve".