1012212205 has 4 divisors (see below), whose sum is σ = 1214654652. Its totient is φ = 809769760.

The previous prime is 1012212191. The next prime is 1012212211. The reversal of 1012212205 is 5022122101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5022122101 = 103 ⋅48758467.

It can be written as a sum of positive squares in 2 ways, for example, as 348531561 + 663680644 = 18669^2 + 25762^2 .

It is not a de Polignac number, because 1012212205 - 2¹³ = 1012204013 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 101221216 + ... + 101221225.

It is an arithmetic number, because the mean of its divisors is an integer number (303663663).

Almost surely, 2^1012212205 is an apocalyptic number.

It is an amenable number.

1012212205 is a deficient number, since it is larger than the sum of its proper divisors (202442447).

1012212205 is an equidigital number, since it uses as much as digits as its factorization.

1012212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202442446.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1012212205 is about 31815.2825698594. The cubic root of 1012212205 is about 1004.0542756355.

Adding to 1012212205 its reverse (5022122101), we get a palindrome (6034334306).

The spelling of 1012212205 in words is "one billion, twelve million, two hundred twelve thousand, two hundred five".