1012022201 has 4 divisors (see below), whose sum is σ = 1013596752. Its totient is φ = 1010447652.

The previous prime is 1012022197. The next prime is 1012022281. The reversal of 1012022201 is 1022202101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1022202101 = 10079 ⋅101419.

It is a cyclic number.

It is not a de Polignac number, because 1012022201 - 2² = 1012022197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012022281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786311 + ... + 787596.

It is an arithmetic number, because the mean of its divisors is an integer number (253399188).

Almost surely, 2^1012022201 is an apocalyptic number.

It is an amenable number.

1012022201 is a deficient number, since it is larger than the sum of its proper divisors (1574551).

1012022201 is an equidigital number, since it uses as much as digits as its factorization.

1012022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574550.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012022201 is about 31812.2963804878. The cubic root of 1012022201 is about 1003.9914474835.

Adding to 1012022201 its reverse (1022202101), we get a palindrome (2034224302).

The spelling of 1012022201 in words is "one billion, twelve million, twenty-two thousand, two hundred one".