10021001101212 has 24 divisors (see below), whose sum is σ = 23437875904912. Its totient is φ = 3332399414400.

The previous prime is 10021001101211. The next prime is 10021001101217. The reversal of 10021001101212 is 21210110012001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021001101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991780489 + ... + 991790592.

Almost surely, 2^{10021001101212} is an apocalyptic number.

10021001101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021001101212 is an abundant number, since it is smaller than the sum of its proper divisors (13416874803700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021001101212 is a wasteful number, since it uses less digits than its factorization.

10021001101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983571509 (or 1983571507 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021001101212 its reverse (21210110012001), we get a palindrome (31231111113213).

The spelling of 10021001101212 in words is "ten trillion, twenty-one billion, one million, one hundred one thousand, two hundred twelve".