1212110101001 has 4 divisors (see below), whose sum is σ = 1215603214032. Its totient is φ = 1208616987972.

The previous prime is 1212110100977. The next prime is 1212110101049. The reversal of 1212110101001 is 1001010112121.

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 1212110101001 - 2⁶ = 1212110100937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212110101061) 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, 1746555995 + ... + 1746556688.

It is an arithmetic number, because the mean of its divisors is an integer number (303900803508).

Almost surely, 2^{1212110101001} is an apocalyptic number.

It is an amenable number.

1212110101001 is a deficient number, since it is larger than the sum of its proper divisors (3493113031).

1212110101001 is an equidigital number, since it uses as much as digits as its factorization.

1212110101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493113030.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1212110101001 its reverse (1001010112121), we get a palindrome (2213120213122).

The spelling of 1212110101001 in words is "one trillion, two hundred twelve billion, one hundred ten million, one hundred one thousand, one".