1012121201 has 32 divisors (see below), whose sum is σ = 1290240000. Its totient is φ = 772338240.

The previous prime is 1012121191. The next prime is 1012121207. The reversal of 1012121201 is 1021212101.

It is a cyclic number.

It is not a de Polignac number, because 1012121201 - 2⁶ = 1012121137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012121207) 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, 1407320 + ... + 1408038.

It is an arithmetic number, because the mean of its divisors is an integer number (40320000).

Almost surely, 2^1012121201 is an apocalyptic number.

It is an amenable number.

1012121201 is a deficient number, since it is larger than the sum of its proper divisors (278118799).

1012121201 is a wasteful number, since it uses less digits than its factorization.

1012121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1012121201 is about 31813.8523445370. The cubic root of 1012121201 is about 1004.0241845494.

Adding to 1012121201 its reverse (1021212101), we get a palindrome (2033333302).

The spelling of 1012121201 in words is "one billion, twelve million, one hundred twenty-one thousand, two hundred one".