1011212000021 has 8 divisors (see below), whose sum is σ = 1024744224000. Its totient is φ = 997698078000.

The previous prime is 1011212000017. The next prime is 1011212000023. The reversal of 1011212000021 is 1200002121101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011212000021 - 2² = 1011212000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011211999966 and 1011212000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011212000023) 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 7 ways as a sum of consecutive naturals, for example, 4464230 + ... + 4685271.

It is an arithmetic number, because the mean of its divisors is an integer number (128093028000).

Almost surely, 2^{1011212000021} is an apocalyptic number.

It is an amenable number.

1011212000021 is a deficient number, since it is larger than the sum of its proper divisors (13532223979).

1011212000021 is an equidigital number, since it uses as much as digits as its factorization.

1011212000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150979.

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

Adding to 1011212000021 its reverse (1200002121101), we get a palindrome (2211214121122).

The spelling of 1011212000021 in words is "one trillion, eleven billion, two hundred twelve million, twenty-one", and thus it is an aban number.