20101121111102 has 4 divisors (see below), whose sum is σ = 30151681666656. Its totient is φ = 10050560555550.

The previous prime is 20101121111101. The next prime is 20101121111107. The reversal of 20101121111102 is 20111112110102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101121111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025280277774 + ... + 5025280277777.

It is an arithmetic number, because the mean of its divisors is an integer number (7537920416664).

Almost surely, 2^{20101121111102} is an apocalyptic number.

20101121111102 is a deficient number, since it is larger than the sum of its proper divisors (10050560555554).

20101121111102 is a wasteful number, since it uses less digits than its factorization.

20101121111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050560555553.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20101121111102 its reverse (20111112110102), we get a palindrome (40212233221204).

The spelling of 20101121111102 in words is "twenty trillion, one hundred one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred two".