1201266213 has 24 divisors (see below), whose sum is σ = 1923298560. Its totient is φ = 664292160.

The previous prime is 1201266211. The next prime is 1201266233. The reversal of 1201266213 is 3126621021.

It is not a de Polignac number, because 1201266213 - 2¹ = 1201266211 is a prime.

It is a super-2 number, since 2×1201266213² = 2886081028990722738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201266211) 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 23 ways as a sum of consecutive naturals, for example, 127248 + ... + 136361.

It is an arithmetic number, because the mean of its divisors is an integer number (80137440).

Almost surely, 2^1201266213 is an apocalyptic number.

It is an amenable number.

1201266213 is a deficient number, since it is larger than the sum of its proper divisors (722032347).

1201266213 is a wasteful number, since it uses less digits than its factorization.

1201266213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263657 (or 263650 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1201266213 is about 34659.2875431680. The cubic root of 1201266213 is about 1063.0322022678.

Adding to 1201266213 its reverse (3126621021), we get a palindrome (4327887234).

The spelling of 1201266213 in words is "one billion, two hundred one million, two hundred sixty-six thousand, two hundred thirteen".