20111022121102 has 16 divisors (see below), whose sum is σ = 33234776434224. Its totient is φ = 9050865040000.

The previous prime is 20111022121087. The next prime is 20111022121147. The reversal of 20111022121102 is 20112122011102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4525430299 + ... + 4525434742.

It is an arithmetic number, because the mean of its divisors is an integer number (2077173527139).

Almost surely, 2^{20111022121102} is an apocalyptic number.

20111022121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111022121102 is a deficient number, since it is larger than the sum of its proper divisors (13123754313122).

20111022121102 is a wasteful number, since it uses less digits than its factorization.

20111022121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9050865155.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111022121102 its reverse (20112122011102), we get a palindrome (40223144132204).

The spelling of 20111022121102 in words is "twenty trillion, one hundred eleven billion, twenty-two million, one hundred twenty-one thousand, one hundred two".