101220400210 has 16 divisors (see below), whose sum is σ = 182212143192. Its totient is φ = 40484732800.

The previous prime is 101220400199. The next prime is 101220400217. The reversal of 101220400210 is 12004022101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101217513609 + 2886601 = 318147^2 + 1699^2 .

It is not an unprimeable number, because it can be changed into a prime (101220400217) 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, 302611 + ... + 542230.

Almost surely, 2^101220400210 is an apocalyptic number.

101220400210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101220400210 is a deficient number, since it is larger than the sum of its proper divisors (80991742982).

101220400210 is a wasteful number, since it uses less digits than its factorization.

101220400210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856829.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101220400210 its reverse (12004022101), we get a palindrome (113224422311).

The spelling of 101220400210 in words is "one hundred one billion, two hundred twenty million, four hundred thousand, two hundred ten".