10021131213123 has 16 divisors (see below), whose sum is σ = 13464570278016. Its totient is φ = 6629231219520.

The previous prime is 10021131213019. The next prime is 10021131213131. The reversal of 10021131213123 is 32131213112001.

It is not a de Polignac number, because 10021131213123 - 2¹² = 10021131209027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021131213123.

It is not an unprimeable number, because it can be changed into a prime (10021131213173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3993336 + ... + 5999082.

It is an arithmetic number, because the mean of its divisors is an integer number (841535642376).

Almost surely, 2^{10021131213123} is an apocalyptic number.

10021131213123 is a deficient number, since it is larger than the sum of its proper divisors (3443439064893).

10021131213123 is a wasteful number, since it uses less digits than its factorization.

10021131213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018594.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 10021131213123 its reverse (32131213112001), we get a palindrome (42152344325124).

The spelling of 10021131213123 in words is "ten trillion, twenty-one billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred twenty-three".