1211211023 has 8 divisors (see below), whose sum is σ = 1321683456. Its totient is φ = 1100799000.

The previous prime is 1211211011. The next prime is 1211211041. The reversal of 1211211023 is 3201121121.

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

It is a cyclic number.

It is not a de Polignac number, because 1211211023 - 2¹⁶ = 1211145487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211210989 and 1211211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211211623) 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, 33698 + ... + 59648.

It is an arithmetic number, because the mean of its divisors is an integer number (165210432).

Almost surely, 2^1211211023 is an apocalyptic number.

1211211023 is a deficient number, since it is larger than the sum of its proper divisors (110472433).

1211211023 is a wasteful number, since it uses less digits than its factorization.

1211211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30205.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1211211023 is about 34802.4571402653. The cubic root of 1211211023 is about 1065.9576192836.

Adding to 1211211023 its reverse (3201121121), we get a palindrome (4412332144).

The spelling of 1211211023 in words is "one billion, two hundred eleven million, two hundred eleven thousand, twenty-three".