1211121102223 has 8 divisors (see below), whose sum is σ = 1230933890592. Its totient is φ = 1191457844736.

The previous prime is 1211121102211. The next prime is 1211121102229. The reversal of 1211121102223 is 3222011211121.

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 1211121102223 - 2⁹ = 1211121101711 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 1211121102223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211121102229) 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, 37366390 + ... + 37398787.

It is an arithmetic number, because the mean of its divisors is an integer number (153866736324).

Almost surely, 2^{1211121102223} is an apocalyptic number.

1211121102223 is a deficient number, since it is larger than the sum of its proper divisors (19812788369).

1211121102223 is an equidigital number, since it uses as much as digits as its factorization.

1211121102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74765441.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1211121102223 its reverse (3222011211121), we get a palindrome (4433132313344).

The spelling of 1211121102223 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred two thousand, two hundred twenty-three".