20101155124 has 48 divisors (see below), whose sum is σ = 35804160000. Its totient is φ = 9873523296.

The previous prime is 20101155083. The next prime is 20101155161. The reversal of 20101155124 is 42155110102.

It is a super-2 number, since 2×20101155124² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101155095 and 20101155104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40282627 + ... + 40283125.

It is an arithmetic number, because the mean of its divisors is an integer number (745920000).

Almost surely, 2^20101155124 is an apocalyptic number.

It is an amenable number.

20101155124 is a deficient number, since it is larger than the sum of its proper divisors (15703004876).

20101155124 is a wasteful number, since it uses less digits than its factorization.

20101155124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 20101155124 its reverse (42155110102), we get a palindrome (62256265226).

The spelling of 20101155124 in words is "twenty billion, one hundred one million, one hundred fifty-five thousand, one hundred twenty-four".