10211221010 has 8 divisors (see below), whose sum is σ = 18380197836. Its totient is φ = 4084488400.

The previous prime is 10211220953. The next prime is 10211221049. The reversal of 10211221010 is 1012211201.

It can be written as a sum of positive squares in 2 ways, for example, as 9622236649 + 588984361 = 98093^2 + 24269^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 10211220982 and 10211221000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510561041 + ... + 510561060.

Almost surely, 2^10211221010 is an apocalyptic number.

10211221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10211221010 is a deficient number, since it is larger than the sum of its proper divisors (8168976826).

10211221010 is a wasteful number, since it uses less digits than its factorization.

10211221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021122108.

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

Adding to 10211221010 its reverse (1012211201), we get a palindrome (11223432211).

The spelling of 10211221010 in words is "ten billion, two hundred eleven million, two hundred twenty-one thousand, ten".