20213112123102 has 32 divisors (see below), whose sum is σ = 42184831788288. Its totient is φ = 6444615917696.

The previous prime is 20213112123097. The next prime is 20213112123103. The reversal of 20213112123102 is 20132121131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213112123103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4623073 + ... + 7861235.

It is an arithmetic number, because the mean of its divisors is an integer number (1318275993384).

Almost surely, 2^{20213112123102} is an apocalyptic number.

20213112123102 is an abundant number, since it is smaller than the sum of its proper divisors (21971719665186).

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

20213112123102 is a wasteful number, since it uses less digits than its factorization.

20213112123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283424.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20213112123102 its reverse (20132121131202), we get a palindrome (40345233254304).

The spelling of 20213112123102 in words is "twenty trillion, two hundred thirteen billion, one hundred twelve million, one hundred twenty-three thousand, one hundred two".