2101201032123 has 10 divisors (see below), whose sum is σ = 3138831171564. Its totient is φ = 1400800688028.

The previous prime is 2101201032097. The next prime is 2101201032187. The reversal of 2101201032123 is 3212301021012.

2101201032123 is a `hidden beast` number, since 210 + 120 + 10 + 321 + 2 + 3 = 666.

It is not a de Polignac number, because 2101201032123 - 2⁶ = 2101201032059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101201032096 and 2101201032105.

It is not an unprimeable number, because it can be changed into a prime (2101201032523) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12970376661 + ... + 12970376822.

Almost surely, 2^{2101201032123} is an apocalyptic number.

2101201032123 is a deficient number, since it is larger than the sum of its proper divisors (1037630139441).

2101201032123 is an equidigital number, since it uses as much as digits as its factorization.

2101201032123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25940753495 (or 25940753486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2101201032123 its reverse (3212301021012), we get a palindrome (5313502053135).

The spelling of 2101201032123 in words is "two trillion, one hundred one billion, two hundred one million, thirty-two thousand, one hundred twenty-three".