101001120210 has 56 divisors (see below), whose sum is σ = 272578351500. Its totient is φ = 26933630112.

The previous prime is 101001120179. The next prime is 101001120211. The reversal of 101001120210 is 12021100101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100424976201 + 576144009 = 316899^2 + 24003^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101001120192 and 101001120201.

It is not an unprimeable number, because it can be changed into a prime (101001120211) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6920085 + ... + 6934664.

Almost surely, 2^101001120210 is an apocalyptic number.

101001120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101001120210 is an abundant number, since it is smaller than the sum of its proper divisors (171577231290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101001120210 is an equidigital number, since it uses as much as digits as its factorization.

101001120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13854774 (or 13854759 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101001120210 its reverse (12021100101), we get a palindrome (113022220311).

The spelling of 101001120210 in words is "one hundred one billion, one million, one hundred twenty thousand, two hundred ten".