1089210120901 has 4 divisors (see below), whose sum is σ = 1244811566752. Its totient is φ = 933608675052.

The previous prime is 1089210120847. The next prime is 1089210120919. The reversal of 1089210120901 is 1090210129801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1089210120901 - 2⁹ = 1089210120389 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 (1089210120991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77800722915 + ... + 77800722928.

It is an arithmetic number, because the mean of its divisors is an integer number (311202891688).

Almost surely, 2^{1089210120901} is an apocalyptic number.

It is an amenable number.

1089210120901 is a deficient number, since it is larger than the sum of its proper divisors (155601445851).

1089210120901 is an equidigital number, since it uses as much as digits as its factorization.

1089210120901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155601445850.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 1089210120901 in words is "one trillion, eighty-nine billion, two hundred ten million, one hundred twenty thousand, nine hundred one".