1021102100212 has 12 divisors (see below), whose sum is σ = 1816222588516. Its totient is φ = 502181360640.

The previous prime is 1021102100177. The next prime is 1021102100261. The reversal of 1021102100212 is 2120012011201.

It can be written as a sum of positive squares in 2 ways, for example, as 532789045776 + 488313054436 = 729924^2 + 698794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021102100192 and 1021102100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092422093 + ... + 2092422580.

Almost surely, 2^{1021102100212} is an apocalyptic number.

It is an amenable number.

1021102100212 is a deficient number, since it is larger than the sum of its proper divisors (795120488304).

1021102100212 is a wasteful number, since it uses less digits than its factorization.

1021102100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184844738 (or 4184844736 counting only the distinct ones).

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

Adding to 1021102100212 its reverse (2120012011201), we get a palindrome (3141114111413).

The spelling of 1021102100212 in words is "one trillion, twenty-one billion, one hundred two million, one hundred thousand, two hundred twelve".