1211014300021 has 4 divisors (see below), whose sum is σ = 1211016972544. Its totient is φ = 1211011627500.

The previous prime is 1211014299953. The next prime is 1211014300039. The reversal of 1211014300021 is 1200034101121.

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 1211014300021 - 2¹³ = 1211014291829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211014299968 and 1211014300004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211014300091) 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, 468885 + ... + 1625386.

It is an arithmetic number, because the mean of its divisors is an integer number (302754243136).

Almost surely, 2^{1211014300021} is an apocalyptic number.

It is an amenable number.

1211014300021 is a deficient number, since it is larger than the sum of its proper divisors (2672523).

1211014300021 is an equidigital number, since it uses as much as digits as its factorization.

1211014300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672522.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1211014300021 its reverse (1200034101121), we get a palindrome (2411048401142).

The spelling of 1211014300021 in words is "one trillion, two hundred eleven billion, fourteen million, three hundred thousand, twenty-one".