2101021020212 has 6 divisors (see below), whose sum is σ = 3676786785378. Its totient is φ = 1050510510104.

The previous prime is 2101021020191. The next prime is 2101021020223. The reversal of 2101021020212 is 2120201201012.

It can be written as a sum of positive squares in only one way, i.e., 1937541505936 + 163479514276 = 1391956^2 + 404326^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262627627523 + ... + 262627627530.

It is an arithmetic number, because the mean of its divisors is an integer number (612797797563).

Almost surely, 2^{2101021020212} is an apocalyptic number.

It is an amenable number.

2101021020212 is a deficient number, since it is larger than the sum of its proper divisors (1575765765166).

2101021020212 is a wasteful number, since it uses less digits than its factorization.

2101021020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525255255057 (or 525255255055 counting only the distinct ones).

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

Adding to 2101021020212 its reverse (2120201201012), we get a palindrome (4221222221224).

The spelling of 2101021020212 in words is "two trillion, one hundred one billion, twenty-one million, twenty thousand, two hundred twelve".