1012212001 has 8 divisors (see below), whose sum is σ = 1022995944. Its totient is φ = 1001443200.

The previous prime is 1012211999. The next prime is 1012212017. The reversal of 1012212001 is 1002122101.

It can be written as a sum of positive squares in 4 ways, for example, as 167728401 + 844483600 = 12951^2 + 29060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012212001 - 2¹ = 1012211999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012213001) 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, 174195 + ... + 179911.

It is an arithmetic number, because the mean of its divisors is an integer number (127874493).

Almost surely, 2^1012212001 is an apocalyptic number.

It is an amenable number.

1012212001 is a deficient number, since it is larger than the sum of its proper divisors (10783943).

1012212001 is a wasteful number, since it uses less digits than its factorization.

1012212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1012212001 is about 31815.2793638528. The cubic root of 1012212001 is about 1004.0542081835.

Adding to 1012212001 its reverse (1002122101), we get a palindrome (2014334102).

The spelling of 1012212001 in words is "one billion, twelve million, two hundred twelve thousand, one".