20210012121111 has 8 divisors (see below), whose sum is σ = 27095559529584. Its totient is φ = 13398903063360.

The previous prime is 20210012121107. The next prime is 20210012121193. The reversal of 20210012121111 is 11112121001202.

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 20210012121111 - 2² = 20210012121107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210012121811) 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, 18609587046 + ... + 18609588131.

It is an arithmetic number, because the mean of its divisors is an integer number (3386944941198).

Almost surely, 2^{20210012121111} is an apocalyptic number.

20210012121111 is a deficient number, since it is larger than the sum of its proper divisors (6885547408473).

20210012121111 is a wasteful number, since it uses less digits than its factorization.

20210012121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37219175361.

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

Adding to 20210012121111 its reverse (11112121001202), we get a palindrome (31322133122313).

The spelling of 20210012121111 in words is "twenty trillion, two hundred ten billion, twelve million, one hundred twenty-one thousand, one hundred eleven".