20121020021102 has 96 divisors (see below), whose sum is σ = 43232240673216. Its totient is φ = 6810664227840.

The previous prime is 20121020021093. The next prime is 20121020021131. The reversal of 20121020021102 is 20112002012102.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 47 ways as a sum of consecutive naturals, for example, 26498513 + ... + 27247260.

It is an arithmetic number, because the mean of its divisors is an integer number (450335840346).

Almost surely, 2^{20121020021102} is an apocalyptic number.

20121020021102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121020021102 is an abundant number, since it is smaller than the sum of its proper divisors (23111220652114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121020021102 is a wasteful number, since it uses less digits than its factorization.

20121020021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53745834 (or 53745823 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121020021102 its reverse (20112002012102), we get a palindrome (40233022033204).

The spelling of 20121020021102 in words is "twenty trillion, one hundred twenty-one billion, twenty million, twenty-one thousand, one hundred two".