1121212102001 has 4 divisors (see below), whose sum is σ = 1121445644004. Its totient is φ = 1120978560000.

The previous prime is 1121212101979. The next prime is 1121212102027. The reversal of 1121212102001 is 1002012121211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 855765605776 + 265446496225 = 925076^2 + 515215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121212102001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121212102051) 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, 116763800 + ... + 116773401.

It is an arithmetic number, because the mean of its divisors is an integer number (280361411001).

Almost surely, 2^{1121212102001} is an apocalyptic number.

It is an amenable number.

1121212102001 is a deficient number, since it is larger than the sum of its proper divisors (233542003).

1121212102001 is an equidigital number, since it uses as much as digits as its factorization.

1121212102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233542002.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121212102001 its reverse (1002012121211), we get a palindrome (2123224223212).

It can be divided in two parts, 112121 and 2102001, that added together give a palindrome (2214122).

The spelling of 1121212102001 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred two thousand, one".