20123211040140 has 96 divisors (see below), whose sum is σ = 60680393819136. Its totient is φ = 4953310053120.

The previous prime is 20123211040073. The next prime is 20123211040147. The reversal of 20123211040140 is 4104011232102.

It is not an unprimeable number, because it can be changed into a prime (20123211040147) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 45512169 + ... + 45952191.

It is an arithmetic number, because the mean of its divisors is an integer number (632087435616).

Almost surely, 2^{20123211040140} is an apocalyptic number.

20123211040140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123211040140 is an abundant number, since it is smaller than the sum of its proper divisors (40557182778996).

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

20123211040140 is a wasteful number, since it uses less digits than its factorization.

20123211040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498679 (or 498677 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20123211040140 its reverse (4104011232102), we get a palindrome (24227222272242).

The spelling of 20123211040140 in words is "twenty trillion, one hundred twenty-three billion, two hundred eleven million, forty thousand, one hundred forty".