10101221210 has 8 divisors (see below), whose sum is σ = 18182198196. Its totient is φ = 4040488480.

The previous prime is 10101221183. The next prime is 10101221231. The reversal of 10101221210 is 1212210101.

It can be written as a sum of positive squares in 2 ways, for example, as 9849967009 + 251254201 = 99247^2 + 15851^2 .

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 = 10101221191 and 10101221200.

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, 505061051 + ... + 505061070.

Almost surely, 2^10101221210 is an apocalyptic number.

10101221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10101221210 is a deficient number, since it is larger than the sum of its proper divisors (8080976986).

10101221210 is a wasteful number, since it uses less digits than its factorization.

10101221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010122128.

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

Adding to 10101221210 its reverse (1212210101), we get a palindrome (11313431311).

The spelling of 10101221210 in words is "ten billion, one hundred one million, two hundred twenty-one thousand, two hundred ten".