20210012211111 has 8 divisors (see below), whose sum is σ = 26972819405184. Its totient is φ = 13460273245560.

The previous prime is 20210012211107. The next prime is 20210012211119. The reversal of 20210012211111 is 11111221001202.

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 20210012211111 - 2² = 20210012211107 is a prime.

It is a super-3 number, since 3×20210012211111³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210012211119) 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, 3267053521 + ... + 3267059706.

It is an arithmetic number, because the mean of its divisors is an integer number (3371602425648).

Almost surely, 2^{20210012211111} is an apocalyptic number.

20210012211111 is a deficient number, since it is larger than the sum of its proper divisors (6762807194073).

20210012211111 is a wasteful number, since it uses less digits than its factorization.

20210012211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534114261.

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

Adding to 20210012211111 its reverse (11111221001202), we get a palindrome (31321233212313).

The spelling of 20210012211111 in words is "twenty trillion, two hundred ten billion, twelve million, two hundred eleven thousand, one hundred eleven".