1012123201001 has 4 divisors (see below), whose sum is σ = 1104134401104. Its totient is φ = 920112000900.

The previous prime is 1012123200961. The next prime is 1012123201007. The reversal of 1012123201001 is 1001023212101.

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 1012123201001 - 2¹⁰ = 1012123199977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012123201007) 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, 46005600035 + ... + 46005600056.

It is an arithmetic number, because the mean of its divisors is an integer number (276033600276).

Almost surely, 2^{1012123201001} is an apocalyptic number.

1012123201001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012123201001 is a deficient number, since it is larger than the sum of its proper divisors (92011200103).

1012123201001 is an equidigital number, since it uses as much as digits as its factorization.

1012123201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92011200102.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1012123201001 its reverse (1001023212101), we get a palindrome (2013146413102).

The spelling of 1012123201001 in words is "one trillion, twelve billion, one hundred twenty-three million, two hundred one thousand, one".