101220133331 has 4 divisors (see below), whose sum is σ = 101298539064. Its totient is φ = 101141727600.

The previous prime is 101220133307. The next prime is 101220133387. The reversal of 101220133331 is 133331022101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133331022101 = 2711 ⋅49181491.

It is a cyclic number.

It is not a de Polignac number, because 101220133331 - 2¹⁴ = 101220116947 is a prime.

It is a super-2 number, since 2×101220133331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220133031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39200930 + ... + 39203511.

It is an arithmetic number, because the mean of its divisors is an integer number (25324634766).

Almost surely, 2^101220133331 is an apocalyptic number.

101220133331 is a deficient number, since it is larger than the sum of its proper divisors (78405733).

101220133331 is an equidigital number, since it uses as much as digits as its factorization.

101220133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78405732.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 101220133331 its reverse (133331022101), we get a palindrome (234551155432).

The spelling of 101220133331 in words is "one hundred one billion, two hundred twenty million, one hundred thirty-three thousand, three hundred thirty-one".