20101222121011 has 8 divisors (see below), whose sum is σ = 20103747217344. Its totient is φ = 20098697215080.

The previous prime is 20101222120997. The next prime is 20101222121047. The reversal of 20101222121011 is 11012122210102.

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 20101222121011 - 2¹¹ = 20101222118963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101222121051) 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, 351372936 + ... + 351430138.

It is an arithmetic number, because the mean of its divisors is an integer number (2512968402168).

Almost surely, 2^{20101222121011} is an apocalyptic number.

20101222121011 is a deficient number, since it is larger than the sum of its proper divisors (2525096333).

20101222121011 is a wasteful number, since it uses less digits than its factorization.

20101222121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95201.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20101222121011 its reverse (11012122210102), we get a palindrome (31113344331113).

The spelling of 20101222121011 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, eleven".