20101202211 has 16 divisors (see below), whose sum is σ = 26856300800. Its totient is φ = 13373481888.

The previous prime is 20101202207. The next prime is 20101202227. The reversal of 20101202211 is 11220210102.

It is not a de Polignac number, because 20101202211 - 2² = 20101202207 is a prime.

It is a super-2 number, since 2×20101202211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101206211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4221450 + ... + 4226208.

It is an arithmetic number, because the mean of its divisors is an integer number (1678518800).

Almost surely, 2^20101202211 is an apocalyptic number.

20101202211 is a deficient number, since it is larger than the sum of its proper divisors (6755098589).

20101202211 is a wasteful number, since it uses less digits than its factorization.

20101202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20101202211 its reverse (11220210102), we get a palindrome (31321412313).

The spelling of 20101202211 in words is "twenty billion, one hundred one million, two hundred two thousand, two hundred eleven".