101131122020 has 12 divisors (see below), whose sum is σ = 212375356284. Its totient is φ = 40452448800.

The previous prime is 101131122019. The next prime is 101131122049. The reversal of 101131122020 is 20221131101.

It can be written as a sum of positive squares in 2 ways, for example, as 33664176484 + 67466945536 = 183478^2 + 259744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101131121986 and 101131122004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2528278031 + ... + 2528278070.

It is an arithmetic number, because the mean of its divisors is an integer number (17697946357).

Almost surely, 2^101131122020 is an apocalyptic number.

101131122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101131122020 is an abundant number, since it is smaller than the sum of its proper divisors (111244234264).

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

101131122020 is a wasteful number, since it uses less digits than its factorization.

101131122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056556110 (or 5056556108 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 101131122020 its reverse (20221131101), we get a palindrome (121352253121).

The spelling of 101131122020 in words is "one hundred one billion, one hundred thirty-one million, one hundred twenty-two thousand, twenty".