1211020093 has 4 divisors (see below), whose sum is σ = 1211389600. Its totient is φ = 1210650588.

The previous prime is 1211020087. The next prime is 1211020103. The reversal of 1211020093 is 3900201121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3900201121 = 2053 ⋅1899757.

It is a cyclic number.

It is not a de Polignac number, because 1211020093 - 2⁵ = 1211020061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211020093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211020493) 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, 179793 + ... + 186406.

It is an arithmetic number, because the mean of its divisors is an integer number (302847400).

Almost surely, 2^1211020093 is an apocalyptic number.

It is an amenable number.

1211020093 is a deficient number, since it is larger than the sum of its proper divisors (369507).

1211020093 is an equidigital number, since it uses as much as digits as its factorization.

1211020093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369506.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1211020093 is about 34799.7139787097. The cubic root of 1211020093 is about 1065.9016053770.

The spelling of 1211020093 in words is "one billion, two hundred eleven million, twenty thousand, ninety-three".