10210221021 has 96 divisors (see below), whose sum is σ = 18830085120. Its totient is φ = 4775846400.

The previous prime is 10210221017. The next prime is 10210221031. The reversal of 10210221021 is 12012201201.

It is not a de Polignac number, because 10210221021 - 2² = 10210221017 is a prime.

It is a super-2 number, since 2×10210221021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10210220988 and 10210221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210221031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1597410 + ... + 1603788.

It is an arithmetic number, because the mean of its divisors is an integer number (196146720).

Almost surely, 2^10210221021 is an apocalyptic number.

10210221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10210221021 is a deficient number, since it is larger than the sum of its proper divisors (8619864099).

10210221021 is a wasteful number, since it uses less digits than its factorization.

10210221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467 (or 6454 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10210221021 its reverse (12012201201), we get a palindrome (22222422222).

The spelling of 10210221021 in words is "ten billion, two hundred ten million, two hundred twenty-one thousand, twenty-one".