1201021130123 has 2 divisors, whose sum is σ = 1201021130124. Its totient is φ = 1201021130122.

The previous prime is 1201021130093. The next prime is 1201021130137. The reversal of 1201021130123 is 3210311201021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201021130123 - 2²² = 1201016935819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201021130723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510565061 + 600510565062.

It is an arithmetic number, because the mean of its divisors is an integer number (600510565062).

Almost surely, 2^{1201021130123} is an apocalyptic number.

1201021130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201021130123 is an equidigital number, since it uses as much as digits as its factorization.

1201021130123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1201021130123 its reverse (3210311201021), we get a palindrome (4411332331144).

The spelling of 1201021130123 in words is "one trillion, two hundred one billion, twenty-one million, one hundred thirty thousand, one hundred twenty-three".