20121021002211 has 8 divisors (see below), whose sum is σ = 26829765293760. Its totient is φ = 13413145356072.

The previous prime is 20121021002197. The next prime is 20121021002263. The reversal of 20121021002211 is 11220012012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121021002211 - 2²² = 20121016807907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121021002111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217107301 + ... + 217199958.

It is an arithmetic number, because the mean of its divisors is an integer number (3353720661720).

Almost surely, 2^{20121021002211} is an apocalyptic number.

20121021002211 is a deficient number, since it is larger than the sum of its proper divisors (6708744291549).

20121021002211 is a wasteful number, since it uses less digits than its factorization.

20121021002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434322705.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121021002211 its reverse (11220012012102), we get a palindrome (31341033014313).

The spelling of 20121021002211 in words is "twenty trillion, one hundred twenty-one billion, twenty-one million, two thousand, two hundred eleven".