1071213213 has 16 divisors (see below), whose sum is σ = 1632813056. Its totient is φ = 611938800.

The previous prime is 1071213203. The next prime is 1071213229. The reversal of 1071213213 is 3123121701.

It is a happy number.

It is not a de Polignac number, because 1071213213 - 2⁵ = 1071213181 is a prime.

It is a super-2 number, since 2×1071213213² = 2294995495411566738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1071213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071213203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98820 + ... + 109122.

It is an arithmetic number, because the mean of its divisors is an integer number (102050816).

Almost surely, 2^1071213213 is an apocalyptic number.

It is an amenable number.

1071213213 is a deficient number, since it is larger than the sum of its proper divisors (561599843).

1071213213 is a wasteful number, since it uses less digits than its factorization.

1071213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15264.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1071213213 is about 32729.3937157412. The cubic root of 1071213213 is about 1023.1955443953.

Adding to 1071213213 its reverse (3123121701), we get a palindrome (4194334914).

The spelling of 1071213213 in words is "one billion, seventy-one million, two hundred thirteen thousand, two hundred thirteen".