20121102202211 has 8 divisors (see below), whose sum is σ = 20299271366880. Its totient is φ = 19942934902912.

The previous prime is 20121102202207. The next prime is 20121102202277. The reversal of 20121102202211 is 11220220112102.

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

It is a cyclic number.

It is not a de Polignac number, because 20121102202211 - 2² = 20121102202207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20121102202211.

It is not an unprimeable number, because it can be changed into a prime (20121102202291) 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, 29939570 + ... + 30604248.

It is an arithmetic number, because the mean of its divisors is an integer number (2537408920860).

Almost surely, 2^{20121102202211} is an apocalyptic number.

20121102202211 is a deficient number, since it is larger than the sum of its proper divisors (178169164669).

20121102202211 is a wasteful number, since it uses less digits than its factorization.

20121102202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932685.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20121102202211 its reverse (11220220112102), we get a palindrome (31341322314313).

The spelling of 20121102202211 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, two hundred two thousand, two hundred eleven".