1012121047 has 8 divisors (see below), whose sum is σ = 1161110016. Its totient is φ = 864232152.

The previous prime is 1012121029. The next prime is 1012121053. The reversal of 1012121047 is 7401212101.

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

It is not a de Polignac number, because 1012121047 - 2²⁷ = 877903319 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 (1012121447) 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, 273043 + ... + 276724.

It is an arithmetic number, because the mean of its divisors is an integer number (145138752).

Almost surely, 2^1012121047 is an apocalyptic number.

1012121047 is a deficient number, since it is larger than the sum of its proper divisors (148988969).

1012121047 is an equidigital number, since it uses as much as digits as its factorization.

1012121047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550037.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1012121047 is about 31813.8499242075. The cubic root of 1012121047 is about 1004.0241336267.

Adding to 1012121047 its reverse (7401212101), we get a palindrome (8413333148).

The spelling of 1012121047 in words is "one billion, twelve million, one hundred twenty-one thousand, forty-seven".