211121202000001 has 4 divisors (see below), whose sum is σ = 213170922407872. Its totient is φ = 209071481592132.

The previous prime is 211121201999977. The next prime is 211121202000043. The reversal of 211121202000001 is 100000202121112.

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 211121202000001 - 2⁹ = 211121201999489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121202000101) 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, 1024860203781 + ... + 1024860203986.

It is an arithmetic number, because the mean of its divisors is an integer number (53292730601968).

Almost surely, 2^{211121202000001} is an apocalyptic number.

It is an amenable number.

211121202000001 is a deficient number, since it is larger than the sum of its proper divisors (2049720407871).

211121202000001 is a wasteful number, since it uses less digits than its factorization.

211121202000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049720407870.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211121202000001 its reverse (100000202121112), we get a palindrome (311121404121113).

The spelling of 211121202000001 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred two million, one", and thus it is an aban number.