10212011221021 has 16 divisors (see below), whose sum is σ = 11162089471104. Its totient is φ = 9304708137984.

The previous prime is 10212011220989. The next prime is 10212011221073. The reversal of 10212011221021 is 12012211021201.

It is a cyclic number.

It is not a de Polignac number, because 10212011221021 - 2⁵ = 10212011220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212011220986 and 10212011221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212011221721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61731201 + ... + 61896406.

It is an arithmetic number, because the mean of its divisors is an integer number (697630591944).

Almost surely, 2^{10212011221021} is an apocalyptic number.

It is an amenable number.

10212011221021 is a deficient number, since it is larger than the sum of its proper divisors (950078250083).

10212011221021 is a wasteful number, since it uses less digits than its factorization.

10212011221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123627780.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10212011221021 its reverse (12012211021201), we get a palindrome (22224222242222).

The spelling of 10212011221021 in words is "ten trillion, two hundred twelve billion, eleven million, two hundred twenty-one thousand, twenty-one".