1211102140123 has 8 divisors (see below), whose sum is σ = 1231932262400. Its totient is φ = 1190409510888.

The previous prime is 1211102140109. The next prime is 1211102140139. The reversal of 1211102140123 is 3210412011121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211102140123 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 1211102140123.

It is not an unprimeable number, because it can be changed into a prime (1211102140153) 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, 34355493 + ... + 34390726.

It is an arithmetic number, because the mean of its divisors is an integer number (153991532800).

Almost surely, 2^{1211102140123} is an apocalyptic number.

1211102140123 is a deficient number, since it is larger than the sum of its proper divisors (20830122277).

1211102140123 is an equidigital number, since it uses as much as digits as its factorization.

1211102140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68746521.

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

Adding to 1211102140123 its reverse (3210412011121), we get a palindrome (4421514151244).

The spelling of 1211102140123 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred forty thousand, one hundred twenty-three".