210101102121010 has 16 divisors (see below), whose sum is σ = 378185211608472. Its totient is φ = 84039723561600.

The previous prime is 210101102120989. The next prime is 210101102121011. The reversal of 210101102121010 is 10121201101012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 183122520804729 + 26978581316281 = 13532277^2 + 5194091^2 .

It is a super-2 number, since 2×210101102121010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210101102121011) 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, 88429821 + ... + 90774640.

Almost surely, 2^{210101102121010} is an apocalyptic number.

210101102121010 is a deficient number, since it is larger than the sum of its proper divisors (168084109487462).

210101102121010 is a wasteful number, since it uses less digits than its factorization.

210101102121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179321709.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210101102121010 its reverse (10121201101012), we get a palindrome (220222303222022).

The spelling of 210101102121010 in words is "two hundred ten trillion, one hundred one billion, one hundred two million, one hundred twenty-one thousand, ten".