1011012197 has 8 divisors (see below), whose sum is σ = 1093945440. Its totient is φ = 928816560.

The previous prime is 1011012157. The next prime is 1011012229. The reversal of 1011012197 is 7912101101.

It is a happy number.

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 1011012197 - 2¹² = 1011008101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011012157) 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, 181547 + ... + 187032.

It is an arithmetic number, because the mean of its divisors is an integer number (136743180).

Almost surely, 2^1011012197 is an apocalyptic number.

It is an amenable number.

1011012197 is a deficient number, since it is larger than the sum of its proper divisors (82933243).

1011012197 is a wasteful number, since it uses less digits than its factorization.

1011012197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368803.

The product of its (nonzero) digits is 126, while the sum is 23.

The square root of 1011012197 is about 31796.4179900818. The cubic root of 1011012197 is about 1003.6573398912.

Adding to 1011012197 its reverse (7912101101), we get a palindrome (8923113298).

The spelling of 1011012197 in words is "one billion, eleven million, twelve thousand, one hundred ninety-seven".