20102121122011 has 8 divisors (see below), whose sum is σ = 20115541805184. Its totient is φ = 20088701055360.

The previous prime is 20102121121921. The next prime is 20102121122087. The reversal of 20102121122011 is 11022112120102.

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 20102121122011 - 2²⁵ = 20102087567579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102121122711) 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, 78340341 + ... + 78596521.

It is an arithmetic number, because the mean of its divisors is an integer number (2514442725648).

Almost surely, 2^{20102121122011} is an apocalyptic number.

20102121122011 is a deficient number, since it is larger than the sum of its proper divisors (13420683173).

20102121122011 is a wasteful number, since it uses less digits than its factorization.

20102121122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308261.

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

Adding to 20102121122011 its reverse (11022112120102), we get a palindrome (31124233242113).

The spelling of 20102121122011 in words is "twenty trillion, one hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, eleven".