1021211000212 has 12 divisors (see below), whose sum is σ = 1924589962036. Its totient is φ = 471328153920.

The previous prime is 1021211000203. The next prime is 1021211000213. The reversal of 1021211000212 is 2120001121201.

It can be written as a sum of positive squares in 2 ways, for example, as 258149351056 + 763061649156 = 508084^2 + 873534^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021211000192 and 1021211000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021211000213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9819336489 + ... + 9819336592.

Almost surely, 2^{1021211000212} is an apocalyptic number.

It is an amenable number.

1021211000212 is a deficient number, since it is larger than the sum of its proper divisors (903378961824).

1021211000212 is a wasteful number, since it uses less digits than its factorization.

1021211000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19638673098 (or 19638673096 counting only the distinct ones).

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

Adding to 1021211000212 its reverse (2120001121201), we get a palindrome (3141212121413).

The spelling of 1021211000212 in words is "one trillion, twenty-one billion, two hundred eleven million, two hundred twelve", and thus it is an aban number.