50011101220021 has 8 divisors (see below), whose sum is σ = 51354985811864. Its totient is φ = 48684120837120.

The previous prime is 50011101220007. The next prime is 50011101220039. The reversal of 50011101220021 is 12002210111005.

It can be written as a sum of positive squares in 4 ways, for example, as 7393836543921 + 42617264676100 = 2719161^2 + 6528190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50011101220021 - 2¹⁹ = 50011100695733 is a prime.

It is a super-2 number, since 2×50011101220021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50011101219977 and 50011101220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50011101220921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226046240 + ... + 4226058073.

It is an arithmetic number, because the mean of its divisors is an integer number (6419373226483).

Almost surely, 2^{50011101220021} is an apocalyptic number.

It is an amenable number.

50011101220021 is a deficient number, since it is larger than the sum of its proper divisors (1343884591843).

50011101220021 is an equidigital number, since it uses as much as digits as its factorization.

50011101220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452104471.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 50011101220021 its reverse (12002210111005), we get a palindrome (62013311331026).

The spelling of 50011101220021 in words is "fifty trillion, eleven billion, one hundred one million, two hundred twenty thousand, twenty-one".