20121202211 has 16 divisors (see below), whose sum is σ = 23018398560. Its totient is φ = 17419288320.

The previous prime is 20121202207. The next prime is 20121202223. The reversal of 20121202211 is 11220212102.

It is a cyclic number.

It is not a de Polignac number, because 20121202211 - 2² = 20121202207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121202811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408740 + ... + 455313.

It is an arithmetic number, because the mean of its divisors is an integer number (1438649910).

Almost surely, 2^20121202211 is an apocalyptic number.

20121202211 is a deficient number, since it is larger than the sum of its proper divisors (2897196349).

20121202211 is a wasteful number, since it uses less digits than its factorization.

20121202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864166.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121202211 its reverse (11220212102), we get a palindrome (31341414313).

The spelling of 20121202211 in words is "twenty billion, one hundred twenty-one million, two hundred two thousand, two hundred eleven".