1209120921301 has 16 divisors (see below), whose sum is σ = 1239769998720. Its totient is φ = 1178892066240.

The previous prime is 1209120921233. The next prime is 1209120921311. The reversal of 1209120921301 is 1031290219021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1209120921301 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 (1209120921311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3898131 + ... + 4196863.

It is an arithmetic number, because the mean of its divisors is an integer number (77485624920).

Almost surely, 2^{1209120921301} is an apocalyptic number.

It is an amenable number.

1209120921301 is a deficient number, since it is larger than the sum of its proper divisors (30649077419).

1209120921301 is a wasteful number, since it uses less digits than its factorization.

1209120921301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299436.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 1209120921301 in words is "one trillion, two hundred nine billion, one hundred twenty million, nine hundred twenty-one thousand, three hundred one".