101212210 has 64 divisors (see below), whose sum is σ = 208687104.
Its totient is φ = 35006400.
The previous prime is 101212207. The next prime is 101212211. The reversal of 101212210 is 12212101.
It is a super-2 number, since 2×1012122102 = 20487822906168200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is not an unprimeable number, because it can be changed into a prime (101212211) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228249 + ... + 228691.
It is an arithmetic number, because the mean of its divisors is an integer number (3260736).
Almost surely, 2101212210 is an apocalyptic number.
101212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
101212210 is an abundant number, since it is smaller than the sum of its proper divisors (107474894).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
101212210 is a wasteful number, since it uses less digits than its factorization.
101212210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 559.
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 101212210 is about 10060.4279233043.
The cubic root of 101212210 is about 466.0268823483.
Adding to 101212210 its reverse (12212101), we get a palindrome (113424311).
The spelling of 101212210 in words is "one hundred one million, two hundred twelve thousand, two hundred ten".