20111011021102 has 16 divisors (see below), whose sum is σ = 31256640100080. Its totient is φ = 9698562395392.

The previous prime is 20111011021097. The next prime is 20111011021139. The reversal of 20111011021102 is 20112011011102.

It is a happy number.

It is a super-2 number, since 2×20111011021102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607845603 + ... + 1607858110.

It is an arithmetic number, because the mean of its divisors is an integer number (1953540006255).

Almost surely, 2^{20111011021102} is an apocalyptic number.

20111011021102 is a deficient number, since it is larger than the sum of its proper divisors (11145629078978).

20111011021102 is a wasteful number, since it uses less digits than its factorization.

20111011021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215703827.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20111011021102 its reverse (20112011011102), we get a palindrome (40223022032204).

The spelling of 20111011021102 in words is "twenty trillion, one hundred eleven billion, eleven million, twenty-one thousand, one hundred two".