1012123021101 has 4 divisors (see below), whose sum is σ = 1349497361472. Its totient is φ = 674748680732.

The previous prime is 1012123021097. The next prime is 1012123021123. The reversal of 1012123021101 is 1011203212101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1012123021101 - 2² = 1012123021097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012123021141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168687170181 + ... + 168687170186.

It is an arithmetic number, because the mean of its divisors is an integer number (337374340368).

Almost surely, 2^{1012123021101} is an apocalyptic number.

It is an amenable number.

1012123021101 is a deficient number, since it is larger than the sum of its proper divisors (337374340371).

1012123021101 is an equidigital number, since it uses as much as digits as its factorization.

1012123021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337374340370.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1012123021101 its reverse (1011203212101), we get a palindrome (2023326233202).

The spelling of 1012123021101 in words is "one trillion, twelve billion, one hundred twenty-three million, twenty-one thousand, one hundred one".