20121162803740 has 48 divisors (see below), whose sum is σ = 44092013962752. Its totient is φ = 7698458098496.

The previous prime is 20121162803657. The next prime is 20121162803743. The reversal of 20121162803740 is 4730826112102.

It is a super-2 number, since 2×20121162803740² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20121162803740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121162803743) 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, 90383247 + ... + 90605593.

It is an arithmetic number, because the mean of its divisors is an integer number (918583624224).

Almost surely, 2^{20121162803740} is an apocalyptic number.

20121162803740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121162803740 is an abundant number, since it is smaller than the sum of its proper divisors (23970851159012).

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

20121162803740 is a wasteful number, since it uses less digits than its factorization.

20121162803740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419106 (or 419104 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

Adding to 20121162803740 its reverse (4730826112102), we get a palindrome (24851988915842).

It can be divided in two parts, 2012116 and 2803740, that added together give a triangular number (4815856 = T₃₁₀₃).

The spelling of 20121162803740 in words is "twenty trillion, one hundred twenty-one billion, one hundred sixty-two million, eight hundred three thousand, seven hundred forty".