20112121210101 has 8 divisors (see below), whose sum is σ = 26816389223904. Its totient is φ = 13407967001520.

The previous prime is 20112121210067. The next prime is 20112121210109. The reversal of 20112121210101 is 10101212121102.

It is a happy number.

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

It is not a de Polignac number, because 20112121210101 - 2¹⁵ = 20112121177333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112121210109) 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, 28038091 + ... + 28746456.

It is an arithmetic number, because the mean of its divisors is an integer number (3352048652988).

Almost surely, 2^{20112121210101} is an apocalyptic number.

It is an amenable number.

20112121210101 is a deficient number, since it is larger than the sum of its proper divisors (6704268013803).

20112121210101 is a wasteful number, since it uses less digits than its factorization.

20112121210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56902611.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20112121210101 its reverse (10101212121102), we get a palindrome (30213333331203).

The spelling of 20112121210101 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, one hundred one".