1211210640907 has 8 divisors (see below), whose sum is σ = 1250307868032. Its totient is φ = 1172115033600.

The previous prime is 1211210640881. The next prime is 1211210640919. The reversal of 1211210640907 is 7090460121121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211210640907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211210640977) 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, 1217973 + ... + 1976329.

It is an arithmetic number, because the mean of its divisors is an integer number (156288483504).

Almost surely, 2^{1211210640907} is an apocalyptic number.

1211210640907 is a deficient number, since it is larger than the sum of its proper divisors (39097227125).

1211210640907 is an equidigital number, since it uses as much as digits as its factorization.

1211210640907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809909.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 1211210640907 in words is "one trillion, two hundred eleven billion, two hundred ten million, six hundred forty thousand, nine hundred seven".