10001021001212 has 24 divisors (see below), whose sum is σ = 17539384090704. Its totient is φ = 4989774246912.

The previous prime is 10001021001203. The next prime is 10001021001281. The reversal of 10001021001212 is 21210012010001.

It is a junction number, because it is equal to n+sod(n) for n = 10001021001193 and 10001021001202.

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, 6135218 + ... + 7592294.

It is an arithmetic number, because the mean of its divisors is an integer number (730807670446).

Almost surely, 2^{10001021001212} is an apocalyptic number.

It is an amenable number.

10001021001212 is a deficient number, since it is larger than the sum of its proper divisors (7538363089492).

10001021001212 is a wasteful number, since it uses less digits than its factorization.

10001021001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460765 (or 1460763 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001021001212 its reverse (21210012010001), we get a palindrome (31211033011213).

The spelling of 10001021001212 in words is "ten trillion, one billion, twenty-one million, one thousand, two hundred twelve".