20210122111101 has 16 divisors (see below), whose sum is σ = 29025266141760. Its totient is φ = 12434596669440.

The previous prime is 20210122111087. The next prime is 20210122111103. The reversal of 20210122111101 is 10111122101202.

It is a happy number.

It is not a de Polignac number, because 20210122111101 - 2⁷ = 20210122110973 is a prime.

It is a super-2 number, since 2×20210122111101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210122111103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49827780 + ... + 50231741.

It is an arithmetic number, because the mean of its divisors is an integer number (1814079133860).

Almost surely, 2^{20210122111101} is an apocalyptic number.

It is an amenable number.

20210122111101 is a deficient number, since it is larger than the sum of its proper divisors (8815144030659).

20210122111101 is a wasteful number, since it uses less digits than its factorization.

20210122111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100064716.

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

Adding to 20210122111101 its reverse (10111122101202), we get a palindrome (30321244212303).

The spelling of 20210122111101 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, one hundred eleven thousand, one hundred one".