1012212101021 has 8 divisors (see below), whose sum is σ = 1104238929888. Its totient is φ = 920186530000.

The previous prime is 1012212100969. The next prime is 1012212101027. The reversal of 1012212101021 is 1201012122101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012212101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012212100987 and 1012212101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012212101027) 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, 2349071 + ... + 2746371.

It is an arithmetic number, because the mean of its divisors is an integer number (138029866236).

Almost surely, 2^{1012212101021} is an apocalyptic number.

1012212101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012212101021 is a deficient number, since it is larger than the sum of its proper divisors (92026828867).

1012212101021 is a wasteful number, since it uses less digits than its factorization.

1012212101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628923.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012212101021 its reverse (1201012122101), we get a palindrome (2213224223122).

The spelling of 1012212101021 in words is "one trillion, twelve billion, two hundred twelve million, one hundred one thousand, twenty-one".