1210001021212 has 24 divisors (see below), whose sum is σ = 2125277893872. Its totient is φ = 602782790400.

The previous prime is 1210001021197. The next prime is 1210001021239. The reversal of 1210001021212 is 2121201000121.

It is a super-3 number, since 3×1210001021212³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210001021192 and 1210001021201.

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, 701412 + ... + 1706452.

It is an arithmetic number, because the mean of its divisors is an integer number (88553245578).

Almost surely, 2^{1210001021212} is an apocalyptic number.

It is an amenable number.

1210001021212 is a deficient number, since it is larger than the sum of its proper divisors (915276872660).

1210001021212 is a wasteful number, since it uses less digits than its factorization.

1210001021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006149 (or 1006147 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210001021212 its reverse (2121201000121), we get a palindrome (3331202021333).

The spelling of 1210001021212 in words is "one trillion, two hundred ten billion, one million, twenty-one thousand, two hundred twelve".