101501202051220 has 48 divisors (see below), whose sum is σ = 219304866186000. Its totient is φ = 39437254702080.

The previous prime is 101501202051079. The next prime is 101501202051229. The reversal of 101501202051220 is 22150202105101.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4965035671696 + 96536166379524 = 2228236^2 + 9825282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101501202051191 and 101501202051200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101501202051229) 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, 270078495 + ... + 270454054.

It is an arithmetic number, because the mean of its divisors is an integer number (4568851378875).

Almost surely, 2^{101501202051220} is an apocalyptic number.

101501202051220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101501202051220 is an abundant number, since it is smaller than the sum of its proper divisors (117803664134780).

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

101501202051220 is a wasteful number, since it uses less digits than its factorization.

101501202051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540532828 (or 540532826 counting only the distinct ones).

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

Adding to 101501202051220 its reverse (22150202105101), we get a palindrome (123651404156321).

The spelling of 101501202051220 in words is "one hundred one trillion, five hundred one billion, two hundred two million, fifty-one thousand, two hundred twenty".